1^st November 2017

Fidessa group plc

Total Voting Rights

In conformity with DTR 5.6.1 of the FCA’s Disclosure and Transparency Rules (“DTR”) Fidessa group plc (“Fidessa”) would like to notify the market of the following:

As at 31^st October 2017, the issued share capital of Fidessa consisted of 38,717,989 ordinary shares of 10p each with voting rights each admitted to trading. There were no shares held in treasury.

The above figure (38,717,989) 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, Fidessa under the DTR.

Classification of regulated information: Total number of voting rights and capital

LEI number: 213800691ANM6EZWOH75