Total Voting Rights

03 April 2023

Oxford Instruments plc (the "Company ")

Voting rights and capital

The following notification is made in accordance with the UK Financial Conduct Authority's Disclosure Guidance and Transparency Rule 5.6.

On 31 March 2023 the issued share capital of the Company with voting rights consisted of 57,712,508 ordinary shares of 5 pence each. The Company does not hold any shares in treasury.

The above figure (57,712,508) may be used by shareholders as the denominator for the calculations by which they will determine if they are required to notify their interest, or a change to their interest, in the Company under the FCA's Disclosure Guidance and Transparency Rules.

LEI: 213800J364EZD6UCE231

Enquiries:

Sarah Harvey

Company Secretary

[phone]