Tristel : Issue of Equity

Tristel plc

("Tristel" or the "Company")

Issue of Equity

Tristel plc (AIM: TSTL), the manufacturer of infection prevention, contamination control and hygiene products, announces that, following the exercise of options by an employee, it has issued and allotted 16,500 new ordinary shares of 1 penny each in the Company ("Ordinary Shares"). Application has been made for the new Ordinary Shares to be admitted to trading on AIM and dealings are expected to commence on 11 May 2018.

The new Ordinary Shares will rank pari passu with the existing shares of the Company. Following the exercise of options, the Company's issued share capital consists of 43,184,133 Ordinary Shares. Accordingly, the figure of 43,184,133 may be used by shareholders as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in the Company under the FCA's Disclosure Guidance and Transparency Rules.

For further information please contact:Tristel plc

Paul Swinney, Chief Executive Officer Liz Dixon, Finance Director

Walbrook PR Ltd

Paul McManus Lianne CawthorneTel: [phone]

Tel: [phone] [e-mail]

Mob: [phone]

Mob: [phone]

finnCap

Geoff Nash (Corporate Finance) Giles Rolls (Corporate Finance) Alice Lane (Corporate Broking)

Tel: [phone]