AIM DELISTING

On 15 October 2021, Silence Therapeutics plc (the “Company” or “Silence”) announced the Company's intention to cancel the admission of its Ordinary Shares to trading on AIM (the "AIM Delisting"), subject to shareholder approval.

The announcement can be found here.

The shareholder circular can be found here.

As set out in the expected timetable of events below, it is expected that the final day of trading of the Ordinary Shares on AIM will be 29 November 2021 with the AIM Delisting taking effect at 7.00 a.m. on 30 November 2021.

Dispatch of the Circular and the enclosed documents

15 October 2021

Latest date for receipt of proxy voting instructions and (if applicable) hard copy forms of proxy

28 October 2021 at 2:00 p.m.

General Meeting

1 November 2021 at 2:00 p.m.

Last date for receipt by Link Group from certificated shareholders of duly completed block transfer participation request forms and original share certificates

3 November 2021 at 1.00 p.m.

Last date for receipt by The Bank of New York Mellon from CREST holders of duly completed issuance forms

17 November 2021 at 3.00 p.m.

Expected date of issuance of ADSs to block transfer participants

24 November 2021

Expected date of posting of ADS confirmations to shareholders by The Bank of New York Mellon

24 November 2021

Last day of dealings in the Ordinary Shares on AIM

29 November 2021

Cancellation of admission to trading on AIM of the Ordinary Shares

30 November 2021 at 7:00 a.m.

Notes

(1) References to time in this announcement are to London time unless otherwise stated.

(2) Each of the times and dates in the above timetable are subject to change. If any of the above times and/or dates change, the revised times and/or dates will be notified to shareholders by announcement through a Regulatory Information Service.

(3) All steps after the General Meeting are dependent on the resolutions being passed at the General Meeting. If the resolutions are not passed at the General Meeting, all documents provided to Link Group and/or The Bank of New York Mellon in relation to the deposit of Ordinary Shares for delivery of ADSs shall be of no effect and all original share certificates will be returned to shareholders by Link Group



FREQUENTLY ASKED QUESTIONS

DO I NEED TO SELL MY AIM-QUOTED ORDINARY SHARES OR MUST I DEPOSIT THEM FOR DELIVERY OF NASDAQ-LISTED ADSs? CURRENTLY HOLD MY ORDINARY SHARES IN THE FORM OF A PAPER CERTIFICATE - HOW DOES THE AIM DELISTING AFFECT ME? HOLD MY SHARES IN CERTIFICATED FORM AND I WANT TO DEPOSIT MY ORDINARY SHARES FOR DELIVERY OF ADSs PRIOR TO THE AIM DELISTING BUT DO NOT WANT TO ENGAGE A BROKER AT THIS TIME – HOW DO I DO THIS? I HAVE ALREADY INITIATED THE DEMATERIALISATION OF MY UK SHARE CERTIFICATE INTO CREST IN ORDER TO DEPOSIT MY ORDINARY SHARES FOR DELIVERY OF ADSs – WHAT SHOULD I DO? I CURRENTLY HOLD MY ORDINARY SHARES IN UNCERTFICATED/ELECTRONIC FORM IN CREST – HOW DOES THE AIM DELISTING AFFECT ME? MY BROKER CURRENTLY HOLDS MY ORDINARY SHARES WITHIN A CREST NOMINEE ACCOUNT – HOW DO I DEPOSIT MY SHARES FOR DELIVERY OF ADSs? HOW DOES THE PRICE OF NASDAQ-LISTED ADSs COMPARE TO THE PRICE OF ORDINARY SHARES ON AIM? CAN I CONTINUE TO HOLD ORDINARY SHARES AFTER THE AIM DELISTING? I ALREADY HOLD ADSs – AM I AFFECTED BY THE AIM DELISTING? HOW DO I BUY AND SELL NASDAQ LISTED ADSs? IS THERE A COST TO DEPOSIT MY ORDINARY SHARES AND HOLD MY SILENCE INVESTMENT IN THE FORM OF ADSs? HOW WILL THE AIM DELISTING AFFECT THE TAX TREATMENT OF SILENCE’S ORDINARY SHARES? WILL THE AIM DELISTING AFFECT MY RIGHTS AS A SHAREHOLDER? I CURRENTLY HOLD MY ORDINARY SHARES IN AN ISA – CAN I CONTINUE TO DO SO? I CURRENTLY HOLD MY ORDINARY SHARES IN A SELF-INVESTED PERSONAL PENSION “SIPP” – CAN I CONTINUE TO DO SO? I HAVE LOST MY ORIGINAL ORDINARY SHARE CERTIFICATE – HOW DO I GET ANOTHER ONE IN ORDER TO PROGRESS THE DEPOSIT OF MY ORDINARY SHARES FOR DELIVERY OF ADSs? I HAVE FURTHER QUESTIONS THAT ARE NOT DEALT WITH SUFFICIENTLY HERE – WHERE CAN I FIND FURTHER INFORMATION? WHAT IF I AM AN “AFFILIATE” UNDER U.S. SECURITIES LAWS (I.E., A DIRECTOR, EXECUTIVE OFFICER OR BENEFICIAL OWNER OF 10% OR MORE OF THE OUTSTANDING EQUITY OF THE COMPANY)?

DO I NEED TO SELL MY AIM-QUOTED ORDINARY SHARES OR MUST I DEPOSIT THEM FOR DELIVERY OF NASDAQ-LISTED ADSs?

Holders of Silence Ordinary Shares now have three options:

(a) You may choose to deposit your Ordinary Shares for delivery of ADSs tradeable on Nasdaq

If your investment is currently held in CREST and managed by a broker, your broker will be able to manage the deposit process for you in accordance with the process set out in Appendix A of this document. If you wish to deposit your Ordinary Shares for delivery of ADSs, you should contact your broker to initiate this process without delay. Please see question 6 below “My broker currently holds my Ordinary Shares within a CREST nominee account – how do I deposit my shares for delivery of ADSs?”.

If you hold your investment in certificated form and wish to deposit it for delivery of ADSs without engaging the services of a broker, you may hold ADSs on the books of the Company’s ADS depositary, The Bank of New York Mellon (“BNY Mellon”), in your name in registered uncertificated form. For details on how to deposit your Ordinary Shares, please see question 3 below “I hold my shares in certificated form and I want to deposit my Ordinary Shares for delivery of ADSs prior to the AIM Delisting but do not want to engage a broker at this time – how do I do this?”..

(b) You may choose to continue to hold your Ordinary Shares

Ordinary Shares will continue to be a valid equity interest in the Company with full voting rights, rights to future dividends, etc., as currently enjoyed by holders of Ordinary Shares. However, following the AIM Delisting there will be no public market in the United Kingdom on which the Ordinary Shares can be traded. Please see question 8 below “Can I continue to hold Ordinary Shares after the AIM Delisting?”.

(c) You may choose to sell your AIM-quoted Ordinary Shares prior to the AIM Delisting becoming effective

If you wish to maintain an equity interest in Silence, you could choose to reinvest in Silence by using the proceeds of the sale of your Ordinary Shares to buy Nasdaq-listed ADSs (Nasdaq ticker: SLN). Dealing and tax costs would likely apply to the AIM and/or Nasdaq transactions.


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CURRENTLY HOLD MY ORDINARY SHARES IN THE FORM OF A PAPER CERTIFICATE - HOW DOES THE AIM DELISTING AFFECT ME?

Ordinary Shares in certificated form are not currently immediately tradeable as, in order to sell them, the share certificates need to be deposited with a broker and “dematerialised” so that they are held in electronic form in CREST, which is the electronic system for the holding of shares in uncertificated form and paperless settlement of share trades. Only when the Ordinary Shares have been converted into electronic form can they then be traded on AIM.

If you choose to retain your Ordinary Shares in certificated form but do not deposit them for delivery of ADSs prior to the AIM Delisting, in order to sell them following AIM Delisting, you will need to use a broker with UK and US capabilities to firstly dematerialise your UK share certificate into CREST and thereafter to liaise with the Company’s depositary, BNY Mellon, to issue the respective ADSs for your broker to sell on your behalf. Your broker will need to contact BNY Mellon in order for your Ordinary Shares to be deposited for delivery of ADSs and credited to the account held by your broker. Upon receiving instructions to do so, your broker would then trade your ADSs via Nasdaq and would remit the proceeds to your personal account. Please also see question 8 below “Can I continue to hold Ordinary Shares after the AIM Delisting?”. Please note that a deposit of Ordinary Shares for delivery of ADSs following the AIM Delisting becoming effective will incur a UK stamp duty, or stamp duty reserve tax (“SDRT”), charge (the rate of which is currently 1.5 per cent. of the market value of the shares deposited), although in all cases professional advice should be sought as to the applicable tax treatment.

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HOLD MY SHARES IN CERTIFICATED FORM AND I WANT TO DEPOSIT MY ORDINARY SHARES FOR DELIVERY OF ADSs PRIOR TO THE AIM DELISTING BUT DO NOT WANT TO ENGAGE A BROKER AT THIS TIME – HOW DO I DO THIS?

If your investment is currently held in certificated form outside of CREST, the Company’s Receiving Agent, Link Group, will facilitate a block transfer process, on behalf of the Company, for those shareholders who do not already hold their Ordinary Shares via a broker and who may wish to participate in a managed deposit process. This process is only available prior to the AIM Delisting to holders of Ordinary Shares in certificated form. Subject to the requisite paperwork being returned to Link Group by the required deadline, being 1.00 p.m. on 3 November 2021, Link Group, will arrange for the relevant Ordinary Shares to be transferred into CREST and then deposit the Ordinary Shares with BNY Mellon, who will then arrange for the delivery of ADSs to an account held in the name of the relevant shareholder on the books of the depositary, in registered uncertificated form. Holders of Ordinary Shares in certificated form will be sent a personalised block transfer participation request form, an example of which is set out in Appendix B. If a shareholder wishes to participate in this managed deposit process, they should complete the form and return it to Link Group in accordance with the instructions set out in the form, so as to be received by Link Group by no later than 1.00 p.m. on 3 November 2021. Further block transfer participation request forms (which are not personalised) are available on the Company’s website at www.silence-therapeutics.com, or can be requested from Link Group by calling 0371 664 0321. Calls are charged at the standard geographic rate and will vary by provider. Calls from outside the UK will be charged at the applicable international rate. Lines are open 9.00 a.m. to 5.30 p.m., Monday to Friday, excluding public holidays in England and Wales. Completed transfer forms and original share certificates may be returned to Link Group, for UK shareholders only, by using the pre-paid envelope sent to you. Both UK shareholders and non-UK shareholders may prefer to return transfer forms and original share certificates using registered post.

If the Resolutions are not passed at the General Meeting, all documents provided to Link Group and/or BNY Mellon in relation to the deposit of Ordinary Shares for delivery of ADSs shall be of no effect and all original share certificates will be returned to shareholders by Link Group. 8321835 v7 3 Shareholders who hold their Ordinary Shares in certificated form and who do not elect to participate in this block transfer process may utilise the services of a broker to facilitate the deposit.

Following the deposit of Ordinary Shares for delivery of ADSs in registered uncertificated form, note that all registered holders will be subject to US stock transfer procedures and guidelines. Holders should consult with a broker to determine applicable stock transfer requirements in relation to future transfers of ADSs. These requirements may include a medallion signature guarantee to effect certain transfers. Further details on medallion signature guarantees may be found at www.investor.gov/introduction-investing/investing-basics/glossary/medallion-signature-guarantees-preventing.

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I HAVE ALREADY INITIATED THE DEMATERIALISATION OF MY UK SHARE CERTIFICATE INTO CREST IN ORDER TO DEPOSIT MY ORDINARY SHARES FOR DELIVERY OF ADSs – WHAT SHOULD I DO?

In order to participate in the block transfer process being facilitated by Link Group, you will need to return your original share certificate with your block transfer participation request form. Accordingly, if you have already returned your share certificate in order to dematerialise it into CREST, you will not be able to participate in the block transfer process. In these circumstances, you should continue with the dematerialisation process and contact your broker to ensure that this and the delivery of ADSs is completed before the AIM Delisting.

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I CURRENTLY HOLD MY ORDINARY SHARES IN UNCERTFICATED/ELECTRONIC FORM IN CREST – HOW DOES THE AIM DELISTING AFFECT ME?

If your investment is currently held in electronic form in CREST and managed by a broker, your broker will be able to manage the deposit process for you in accordance with the process set out in Appendix A of this document.

out in Appendix A of this document. If your Ordinary Shares are currently held in electronic form in CREST and you do not deposit them for delivery of ADSs before the AIM Delisting, your Ordinary Shares will continue to be held in your CREST account, but in unquoted form. Following the AIM Delisting, you will not be able to publicly trade any of your Ordinary Shares on any listed exchange in CREST as the Company will have cancelled its admission to trading on AIM. Please see question 8 below “Can I continue to hold Ordinary Shares after the AIM Delisting?”. Deposits of Ordinary Shares for delivery of ADSs following the AIM Delisting becoming effective will incur a UK stamp duty, or SDRT, charge (the rate of which is currently 1.5 per cent. of the market value of the shares deposited), although in all cases professional advice should be sought as to the applicable tax treatment.

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MY BROKER CURRENTLY HOLDS MY ORDINARY SHARES WITHIN A CREST NOMINEE ACCOUNT – HOW DO I DEPOSIT MY SHARES FOR DELIVERY OF ADSs?

Many UK brokers have the ability to hold and trade Nasdaq-listed securities. In order to continue holding a form of security in the Company that is readily tradeable, you should contact your broker without delay to request that Ordinary Shares are deposited for delivery of ADSs by following the process set out on Appendix A of this document. Your broker will provide the Company’s depositary, BNY Mellon, with certain details by email in relation to the deposit and will then transmit your Ordinary Shares electronically to BNY Mellon’s UK custodian’s CREST account.

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HOW DOES THE PRICE OF NASDAQ-LISTED ADSs COMPARE TO THE PRICE OF ORDINARY SHARES ON AIM?

Silence currently maintains a listing of ADSs on the Global Market tier of the Nasdaq Stock Market. Each ADS is a financial instrument that represents three Ordinary Shares. The price of each ADS is expressed in US dollars and should approximate the value of the three Ordinary Shares that it represents on a currency adjusted basis. Currently, the price of an Ordinary Share on AIM can be compared to the price of Silence’s Nasdaq-listed ADSs by dividing the ADS price by three and then dividing by the US dollar to pounds sterling exchange rate to calculate the equivalent sterling denominated price per Ordinary Share.

As part of the AIM Delisting, holders of Ordinary Shares may deposit such Ordinary Shares for delivery of ADSs (see question 1 “Do I need to sell my AIM-quoted Ordinary Shares or must I deposit them for delivery of Nasdaq listed ADSs?” above). Once Ordinary Shares are deposited and the ADSs subsequently delivered, the investment will be US dollar denominated instead of pounds sterling denominated. This means that when valued in pounds sterling, its value will fluctuate on a day-to-day basis in line with movements in £:US$ exchange rate.

Once the AIM Delisting takes effect on 30 November 2021, there will no longer be a published price for an individual Ordinary Share. It will, however, always be possible to calculate the value of an individual Ordinary Share in pounds sterling by taking the Nasdaq ADS market price, dividing by three and dividing by the US dollar to pounds sterling exchange rate. The Nasdaq ADS price is, and will continue to be, available via Silence’s website at www.silence-therapeutics.com or may otherwise be found online on a broad range of financial websites.

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CAN I CONTINUE TO HOLD ORDINARY SHARES AFTER THE AIM DELISTING?

Should you wish to do so, it will be possible to continue to hold Ordinary Shares after the AIM Delisting. However, shareholders should be aware that the Ordinary Shares will not be admitted to trading on any public market in the United Kingdom and the Ordinary Shares will not be tradeable on Nasdaq in this form.

Should you wish to sell your Ordinary Shares following the AIM Delisting becoming effective, you will likely be required first to deposit such Ordinary Shares for delivery of ADSs via the Company’s depositary bank, BNY Mellon, and any sale of the resulting ADSs will likely need to be via a broker with US share trading capability. Please note that a deposit of Ordinary Shares for delivery of ADSs following the AIM Delisting becoming effective will incur a UK stamp duty, or SDRT, charge (the rate of which is currently 1.5 per cent. of the market value of the shares deposited), although in all cases professional advice should be sought as to the applicable tax treatment.

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I ALREADY HOLD ADSs – AM I AFFECTED BY THE AIM DELISTING?

The Nasdaq-listed ADSs will continue to trade as normal. Existing holders of ADSs not also holding Ordinary Shares do not need to take any action in connection with the AIM Delisting.

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HOW DO I BUY AND SELL NASDAQ LISTED ADSs?

The majority of brokers in the UK have the capability to hold US exchange-listed securities and are capable of buying and selling them for you. A small depositary services fee (“DSF”) currently up to US$0.05 per ADS per annum, is levied by the Company’s depositary bank, BNY Mellon, and brokers may also charge an annual fee for holding a US security on your behalf.

Should you wish to increase your holding in the Company, you should be able to purchase further ADSs via your broker. You will need to instruct your broker to purchase Silence ADSs (Nasdaq ticker: SLN).

If you wish to continue to hold your investment in the Company directly, without engaging the services of a broker, you may hold ADSs in your name on the books of the Company’s depositary, in registered uncertificated form. If a shareholder wishes to receive ADSs without engaging the services of a broker, please see question 3 above “I hold my Ordinary Shares in certificated form and I want to deposit my Ordinary Shares for delivery of ADSs prior to the AIM Delisting but do not want to engage a broker at this time – how do I do this?”.

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IS THERE A COST TO DEPOSIT MY ORDINARY SHARES AND HOLD MY SILENCE INVESTMENT IN THE FORM OF ADSs?

Ordinarily, shareholders who deposit their Ordinary Shares for delivery of ADSs are charged an ADS issuance fee, by the depositary, of up to $5.00 per 100 ADSs or portion thereof. However, no ADS issuance fees will be charged to shareholders who elect to deposit their Ordinary Shares in connection with the AIM Delisting whether prior, on, or subsequent to 30 November 2021 (being the date on which the AIM Delisting takes effect), except that the Depositary has not agreed to waive that fee with respect to more than 81,831,467 Ordinary Shares, which is the number of Ordinary Shares that were in issue but not represented by ADSs on 15 October 2021 and has not agreed to waive fees on any deposit made by the Company.

Otherwise than in connection with the AIM Delisting, ADS issuance fees of up to $5.00 per 100 ADSs or portion thereof will be charged by the depositary in connection with any future deposits of Ordinary Shares.

The DSF, currently up to US$0.05 per ADS, is levied to ADS holders by BNY Mellon annually. This is typically paid and charged to your account by your broker. All ADS holders are required to pay the annual DSF.

Any questions regarding fees can be directed to drsettlements@bnymellon.com.

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HOW WILL THE AIM DELISTING AFFECT THE TAX TREATMENT OF SILENCE’S ORDINARY SHARES?

Silence is not able to provide shareholders with any form of taxation advice and shareholders are strongly advised to seek their own professional advice in order to ascertain the consequences for them of continuing to hold Ordinary Shares following the AIM Delisting becoming effective or depositing Ordinary Shares for delivery of ADSs.

The Company’s understanding of the current position for individuals who are UK resident and UK domiciled under UK taxation law is as follows but it should be noted that the Company has not taken steps to confirm the current position with HMRC. Therefore, the following should not 8321835 v7 6 be relied upon by shareholders without taking further advice (and the Company accepts no liability whatsoever in respect of any tax information provided).

The AIM Delisting should not prevent the Ordinary Shares from qualifying as unlisted/unquoted securities for the purposes of certain specific UK tax rules (notably, the UK inheritance tax business property relief rules). Accordingly, it is expected that HMRC should accept that those shareholders who elect to continue to hold unlisted Ordinary Shares should continue to be regarded as holding unlisted/unquoted securities under those same rules.

Under HMRC’s stated practice those shareholders who elect to deposit their holdings of Ordinary Shares for delivery of Nasdaq-listed ADSs should not be considered as disposing of the Ordinary Shares for UK capital gains tax purposes when transferring the shares to the Company's ADS depositary, BNY Mellon, in exchange for issue of ADSs on the basis that the shareholder retains beneficial ownership of the Ordinary Shares.

Shareholders who elect to deposit their holdings of Ordinary Shares for delivery of Nasdaqlisted ADSs prior to the AIM Delisting should not incur a stamp duty, or SDRT, charge. It is expected that shareholders who elect to deposit their holdings of Ordinary Shares for delivery of Nasdaq-listed ADSs following the AIM Delisting will incur a stamp duty, or SDRT, charge at the rate of 1.5 per cent. of the market value of the Ordinary Shares being deposited.

It is strongly recommended that shareholders obtain appropriate professional advice in respect of these and other taxes.

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WILL THE AIM DELISTING AFFECT MY RIGHTS AS A SHAREHOLDER?

As a company incorporated in England and Wales, Silence will continue to be subject to the requirements of the Companies Act 2006.

Following the AIM Delisting taking effect, the Company will no longer be subject to the AIM Rules for Companies published by London Stock Exchange plc or be required to retain the services of an independent nominated adviser. The Company will also no longer be subject to the QCA Corporate Governance Code. In addition, the Company will no longer be required to comply with the continuing obligations set out in the Financial Conduct Authority’s Disclosure Guidance and Transparency Rules (“DTRs”) or, provided the Company’s securities remain outside the scope of the regulation, the EU Market Abuse Regulation (Regulation (EU) No.596/2014) which forms part of domestic law in the United Kingdom pursuant to the European Union (Withdrawal) Act 2018 (as Nasdaq is not an in-scope exchange for the purposes of such legislation). In addition, the Company will no longer be subject to the provisions of the DTRs relating to the disclosure of changes in significant shareholdings in Silence. The Company intends to continue to comply with all regulatory requirements for the Nasdaq listing of its ADSs, including all applicable rules and regulations of the US Securities and Exchange Commission.

Shareholders who continue to hold Ordinary Shares will continue to be notified in writing of the availability of key documents on our website, including publication of Annual Reports and Annual General Meeting documentation. Holders of ADSs will be able to continue to access all such information via the Silence website. Holders of Ordinary Shares and ADSs will both be eligible to receive any future dividends that may be declared.

Following the AIM Delisting taking effect, as the Company will remain a public limited company incorporated in England and Wales but its securities will not be admitted to trading on a regulated market or multilateral trading facility in the United Kingdom (or a stock exchange in the Channel Islands or the Isle of Man), the City Code on Takeovers and Mergers (the “City Code”) will only apply to the Company if it is considered by the Panel on Takeovers and Mergers (the “Panel”) to have its place of central management and control in the United Kingdom (or the Channel Islands or the Isle of Man). This is known as the “residency test”. The way in which the test for central management and control is applied for the purposes of the City Code may be different from the way in which it is applied by the United Kingdom tax authorities, HMRC. Under the City Code, the Panel looks to where the majority of the directors of the Company are resident, amongst other factors, for the purposes of determining where the Company has its place of central management and control.

The Panel has confirmed to the Company that following the AIM Delisting, based on the current composition of the Board, the City Code will continue to apply to the Company. However, the City Code could cease to apply to the Company in the future if any changes to the Board composition result in the majority of the Directors not being resident in the United Kingdom, Channel Islands and Isle of Man. Please refer to paragraph five of the Letter from the Chairman of Silence Therapeutics plc and Appendix A of the shareholder circular for more information.

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I CURRENTLY HOLD MY ORDINARY SHARES IN AN ISA – CAN I CONTINUE TO DO SO?

Although the AIM Delisting does not directly impact on the ability of a UK shareholder to retain their holding of Ordinary Shares, we understand that some UK ISA operators, particularly those that involve an online share trading account, may insist that the shares held in the ISA must be publicly quoted and may only allow trading in UK companies via low-cost online trading facilities.

Please ask your ISA provider as soon as possible to confirm whether they will allow you to continue to hold your Ordinary Shares or whether they are able to deposit such Ordinary Shares for delivery of Nasdaq-listed ADSs to hold on your behalf. If they do not allow you to continue to hold Ordinary Shares and cannot deposit the Ordinary Shares for delivery of ADSs to hold on your behalf, you should consult an appropriate professional adviser without delay.

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I CURRENTLY HOLD MY ORDINARY SHARES IN A SELF-INVESTED PERSONAL PENSION “SIPP” – CAN I CONTINUE TO DO SO?

Although the AIM Delisting does not impact on the ability of a UK shareholder to retain their holding of Ordinary Shares, we understand that some SIPP scheme administrators, particularly those that involve an online share trading account, may insist that the shares held in an individual’s SIPP must be publicly quoted and sometimes only allow trading in UK companies online.

Please ask your SIPP provider as soon as possible to confirm whether they will allow you to continue to hold your Ordinary Shares or whether they are able to deposit your holding of Ordinary Shares for delivery of ADSs and continue to hold such ADSs on your behalf. If they do not allow you to continue to hold Ordinary Shares and cannot deposit the Ordinary Shares for delivery of ADSs on your behalf, you should consult an appropriate professional adviser without delay.

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I HAVE LOST MY ORIGINAL ORDINARY SHARE CERTIFICATE – HOW DO I GET ANOTHER ONE IN ORDER TO PROGRESS THE DEPOSIT OF MY ORDINARY SHARES FOR DELIVERY OF ADSs?

Replacement share certificates are available from Silence’s registrar, Link Group. Please contact Link Group without delay on 0371 664 0300 or by email to shareholderenquiries@linkgroup.co.uk. Calls are charged at the standard geographic rate and will vary by provider. Calls outside the United Kingdom will be charged at the applicable international rate. The helpline is open between 09:00 – 17:30, Monday to Friday excluding public holidays in England and Wales.

Link Group will be able to provide you with a replacement share certificate for your Ordinary Shares, although there may be a fee for this. Certain proof of ownership/identification will be required by Link Group prior to issuance of replacement certificates.

Please note that you will not be able to transfer your certificated shares via Link Group without an original share certificate being received by Link Group with your duly completed block transfer participation request form in Appendix B before the required deadline, being 1.00 p.m. on 3 November 2021.

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I HAVE FURTHER QUESTIONS THAT ARE NOT DEALT WITH SUFFICIENTLY HERE – WHERE CAN I FIND FURTHER INFORMATION?

If you hold your Ordinary Shares via a broker, please discuss with your broker in the first instance.

In respect of any queries regarding completion of the block transfer participation request form, a shareholder assistance advice line is being operated by the Company’s Receiving Agent, Link Group, which can be accessed by all shareholders on 0371 664 0321. Calls are charged at the standard geographic rate and will vary by provider. Calls from outside the UK. will be charged at the applicable international rate. Lines are open 9.00 a.m. to 5.30 p.m., Monday to Friday, excluding public holidays in England and Wales.

In respect of any queries regarding the deposit of Ordinary Shares for delivery of ADSs, please contact the Company’s depositary, BNY Mellon, on 00353 1 900 3467. Calls are charged at the applicable international rate and will vary by provider. Lines are open 9.00 a.m. to 5.30 p.m., Monday to Friday, excluding public holidays in Ireland.

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WHAT IF I AM AN “AFFILIATE” UNDER U.S. SECURITIES LAWS (I.E., A DIRECTOR, EXECUTIVE OFFICER OR BENEFICIAL OWNER OF 10% OR MORE OF THE OUTSTANDING EQUITY OF THE COMPANY)?

If you are a director, executive officer or beneficial owner of 10% or more of the outstanding equity of the Company, please contact the Company directly for instructions on how to proceed should you wish to deposit your Ordinary Shares for delivery of ADSs.

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