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LONDON--(BUSINESS WIRE)-- TR-1: Standard form for notification of major holdings NOTIFICATION OF MAJOR HOLDINGS 1a. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attachedii: Next Fifteen Communications PLC 1b. Please indicate if the issuer is a non-UK issuer (please mark with an X if appropriate) Non-UK issuer 2. Reason for the notification (please mark the appropriate box or boxes with an X) An acquisition or disposal of voting rights X An acquisition or disposal of financial instruments An event changing the breakdown of voting rights Other (please specify)iii: 3. Details of person subject to the notification obligationiv Name BlackRock, Inc. City and country of registered office (if applicable) Wilmington, DE, USA 4. Full name of shareholder(s) (if different from 3.)v Name City and country of registered office (if applicable) 5. Date on which the threshold was crossed or reachedvi: 20/04/2021 6. Date on which issuer notified (DD/MM/YYYY): 21/04/2021 7. Total positions of person(s) subject to the notification obligation % of voting rights attached to shares (total of 8. A) % of voting rights through financial instruments (total of 8.B 1 + 8.B 2) Total of both in % (8.A + 8.B) Total number of voting rights of issuervii Resulting situation on the date on which threshold was crossed or reached 5.06% N/A 5.06% 4,684,466 Position of previous notification (if applicable) Below 5% N/A Below 5% 8. Notified details of the resulting situation on the date on which the threshold was crossed or reachedviii A: Voting rights attached to shares Class/type of shares ISIN code (if possible) Number of voting rightsix % of voting rights Direct ((DTR5.1) Indirect (DTR5.2.1) Direct (DTR5.1) Indirect (DTR5.2.1) GB0030026057 4,684,466 5.06% SUBTOTAL 8. A 4,684,466 5.06% B 1: Financial Instruments according to DTR5.3.1R (1) (a) Type of financial instrument Expiration datex Exercise/ Conversion Periodxi Number of voting rights that may be acquired if the instrument is exercised/converted. % of voting rights SUBTOTAL 8. B 1 B 2: Financial Instruments with similar economic effect according to DTR5.3.1R (1) (b) Type of financial instrument Expiration datex Exercise/ Conversion Period xi Physical or cash settlementxii Number of voting rights % of voting rights SUBTOTAL 8.B.2 9. Information in relation to the person subject to the notification obligation (please mark the applicable box with an X) Person subject to the notification obligation is not controlled by any natural person or legal entity and does not control any other undertaking(s) holding directly or indirectly an interest in the (underlying) issuerxiii Full chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held starting with the ultimate controlling natural person or legal entityxiv (please add additional rows as necessary) X Namexv % of voting rights if it equals or is higher than the notifiable threshold % of voting rights through financial instruments if it equals or is higher than the notifiable threshold Total of both if it equals or is higher than the notifiable threshold See Attachment 10. In case of proxy voting, please identify: Name of the proxy holder The number and % of voting rights held The date until which the voting rights will be held 11. Additional informationxvi Contact Next 15: Mark Sanford, General Counsel & Company Secretary, +44 (0)7590 928 794. LEI: 213800BK9MBUZUUPMZ63 Place of completion 12 Throgmorton Avenue, London, EC2N 2DL, U.K. Date of completion 21 April, 2021 Section 9 Attachment Namexv % of voting rights if it equals or is higher than the notifiable threshold % of voting rights through financial instruments if it equals or is higher than the notifiable threshold Total of both if it equals or is higher than the notifiable threshold BlackRock, Inc. BlackRock Holdco 2, Inc. BlackRock Financial Management, Inc. BlackRock International Holdings, Inc. BR Jersey International Holdings L.P. BlackRock Holdco 3, LLC BlackRock Cayman 1 LP BlackRock Cayman West Bay Finco Limited BlackRock Cayman West Bay IV Limited BlackRock Group Limited BlackRock Finance Europe Limited BlackRock Investment Management (UK) Limited 5.06% 5.06%

Answer: Holding(s) in Company