Diploma Regulatory News (DPLM)

DIPLOMA PLC

12 CHARTERHOUSE SQUARE, LONDON EC1M 6AX

TELEPHONE: +44 (0)20 7549 5700

FACSIMILE: +44 (0)20 7549 5715

FOR IMMEDIATE RELEASE

7 January 2021

Arrangements for the Annual General Meeting in light of COVID-19

Diploma PLC (the "Company") announces that as a result of the additional COVID-19 restrictions that the UK Government has put in place, and being mindful of the health and safety of our shareholders, employees and stakeholders, the Company's Annual General Meeting to be held on 20 January 2021 (the "AGM") will be held as a closed meeting at the Company's registered office. The AGM will be attended by two specified shareholders (which will be facilitated by the Company) to ensure that the meeting is quorate. These shareholders will observe all appropriate measures including social distancing and attendance via conference call as needed for their personal health.

On that basis, other shareholders and their proxies should not attend the AGM in person as they will not be allowed to join the meeting. Shareholders are strongly encouraged to submit their votes by proxy in advance and to appoint the Chairman of the AGM as their proxy. If a shareholder appoints someone else as their proxy, that proxy will not be able to attend the meeting in order to cast the shareholder's vote.

As voting on all resolutions at the AGM will be on a poll, this will ensure that all votes of shareholders will be counted, whether or not shareholders are able to attend the AGM. On a poll, each shareholder has one vote for every share held. The results of the poll will be announced shortly after the AGM, via the Regulatory News Service ("RNS") and published on the Company's website at www.diplomaplc.com.

The Board recognises that the AGM is a valuable opportunity for the Board to engage with shareholders. Shareholders are therefore invited to submit questions to the Board in advance of the meeting via email to Investors@diplomaplc.com by 1200 on 18 January 2021. The Board will endeavour to provide written answers directly to questions received in this way as soon as practicable after the AGM.

For further information, please contact:

LEI:2138008OGI7VYG8FGR19