News release

Velocys plc

("Velocys" or "the Company")

1 November 2017

Total voting rights

The Company announces that, following the issue of new Ordinary Shares pursuant to the exercise of a share option during the month ended 31 October 2017 and their admission to trading on AIM under the Company's blocklisting, the total issued share capital of the Company is 146,859,819 Ordinary Shares, each with voting rights.

The Company does not currently hold any shares in treasury. Accordingly, this figure of 146,859,819 Ordinary Shares may be used by shareholders in the Company as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change in their interest in, the share capital of the Company under the FCA's Disclosure and Transparency Rules.

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For further information, please contact:

www.velocys.com