Form 144 - Report of proposed sale of securities

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144: Remarks and Signature

Remarks	The number of shares to be sold is in the form of American Depositary Shares ("ADSs"). The number of shares outstanding is in the form of ordinary shares. Each ADS represents 5 ordinary shares, nominal value GBP 0.003 per ordinary share, of the Issuer.
Date of Notice	05/23/2024
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Alexandra Hughes-Wilson
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)