Legal Entity Identifier (LEI): 5493000FBZP1J92OQY70 29 April 2021 Reminder to CULS Holders of Conversion Rights The Company reminds holders ( CULS Holders ) of 2.25 per cent. convertible unsecured loan stock 2025 ( CULS ) constituted by the Trust Deed dated 24 May 2018 that they have the right to convert ( Conversion Right ) the whole or such part (being an integral multiple of £1 nominal) of their CULS as they may specify into fully paid Ordinary shares of 25p each in the capital of the Company ( Ordinary Shares ) at any time during the period of 28 days ending on 31 May 2021 (the Conversion Date ) in accordance with the terms of issue of the CULS which were set out in the prospectus of the Company dated 20 April 2018.