Letter to Shareholders May 2025

30 April 2025 Dear Shareholder

Thank you for registering to receive Checkit plc shareholder communications in electronic form via the internet.

The Notice of Annual General Meeting and the annual report and accounts for the year ended 31 January 2025

are now available on the Company's website at https://www.checkit.net.

The Company's Annual General Meeting will be held at 12 noon on Thursday 5 June 2025 at Fieldfisher LLP,

Riverbank House, 2 Swan Lane, London EC4R 3TT.

If you are voting by proxy, please send us your vote by completing and submitting your form of proxy online via the Investor Centre app or web browser at https://uk.investorcentre.mpms.mufg.com so as to be received at least 48 hours before the time of the meeting.

Investor Centre is a free app for smartphone and tablet provided by MUFG Corporate Markets(the Company's registrar). It allows you to securely manage and monitor your shareholdings in real time, take part in online voting, keep your details up to date, access a range of information including payment history, and much more. The app is available to download on both the Apple App Store and Google Play, or by scanning the relevant QR code below.

If you are an institutional investor you may also be able to appoint a proxy electronically via the Proxymity platform, a process which has been agreed by the Company and approved by the registrar. For further information regarding Proxymity, please go to https://www.proxymity.io. Your proxy must be lodged by 12 noon on 3 June 2025 in order to be considered valid or, if the meeting is adjourned, by the time which is 48 hours before the time of the adjourned meeting. Before you can appoint a proxy via this process you will need to have

agreed to Proxymity's associated terms and conditions. It is important that you read these carefully as you will be bound by them and they will govern the electronic appointment of your proxy. An electronic proxy appointment via the Proxymity platform may be revoked completely by sending an authenticated message via the platform instructing the removal of your proxy vote.

If you are a CREST member, you should contact your CREST service provider, who will be able to help you vote via the CREST system.

If you are unable to locate any of the documents on the web page or need help with voting or require physical Form of Proxy, please email our registrar, MUFG Corporate Markets, at shareholderenquiries@cm.mpms.mufg.com or telephone the MUFG Corporate Markets shareholder helpline on 0371 664 0300. 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. Lines are open from 9.00 a.m. to 5.30 p.m., Monday to Friday (excluding public holidays in England and Wales).

Yours faithfully

Director and CFO

Registered office

Broers Building, J J Thomson Avenue, Cambridge CB3 0FA, United Kingdom t: +44 (0) 1252 406 340

w: https://www.checkit.net

Registered in England and Wales, number: 00448274