REG — Barclays PLC Gamma Communications — Form8.5EPT/NonRIGAMMACOMMUNICATIONSPLC Replacement

5 of the Takeover Code (the "Code") 1. KEY INFORMATION (a) Name of exempt principal trader: BARCLAYS CAPITAL SECURITIES LTD (b) Name of offeror/offeree in relation to whose GAMMA COMMUNICATIONS PLC relevant securities this form relates: (c) Name of the party to the offer with which exempt GAMMA COMMUNICATIONS PLC principal trader is connected (d) Date position held/dealing undertaken: 17 Sep 2026 (e) In addition to the company in 1(b) above, is the exempt principal NO trader making disclosures in respect of any other party to the offer? 2.

40% (b) Rights to subscribe for new securities (including directors and other executive options) Class of relevant security in relation to which subscription right exists Details, including nature of the rights concerned and relevant percentages: 3.

2248 GBP (c) Stock-settled derivative transactions (including options) (i) Writing, selling, purchasing or varying Class Product Writing, Number Exercise Type Expiry Option of description purchasing, of price date money relevant selling, securities per unit paid/ security varying etc to which received option per unit relates (ii) Exercising Class of relevant Product description Exercising/ exercised against Number of Exercise price per security securities unit (d) Other dealings (including subscribing for new securities) Class of relevant Nature of Dealings Details Price per unit (if security applicable) 4.

OTHER INFORMATION (a) Indemnity and other dealings arrangements Details of any indemnity or option arrangement, or any agreement or understanding, formal or informal, relating to relevant securities which may be an inducement to deal or refrain from dealing entered into by the exempt principal trader making the disclosure and any party to the offer or any person acting in concert with a party to the offer: NONE (b) Agreements, arrangements or understandings relating to options or derivatives Details of any agreement, arrangement or understanding, formal or informal, between the exempt principal trader making the disclosure and any other person relating to: (i) the voting rights of any relevant securities under any option; or (ii) the voting rights of future acquisition or disposal of any relevant securities to which any derivative is referenced: NONE (c) Attachments Is a Supplemental Form 8 (Open Positions) attached?

NO Date of disclosure: 18 Sep 2026 Contact name: Large Holdings Regulatory Operations Telephone number: 020 3134 7213 This information is provided by RNS, the news service of the London Stock Exchange. RNS is approved by the Financial Conduct Authority to act as a Primary Information Provider in the United Kingdom. Terms and conditions relating to the use and distribution of this information may apply. com) or visit ( ).

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