Total Voting Rights

29 June 2012

Hydrogen Group plc ("Hydrogen")

Total Voting Rights

In conformity with the Disclosure and Transparency Rules Hydrogen would like to notify the market of the following:

As at 29 June 2012, Hydrogen's issued share capital consisted of 23,518,519 ordinary shares with voting rights.

There are no shares held in the treasury.

Therefore, the total number of voting rights in Hydrogen is 23,518,519.

The above figure 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 Hydrogen Group plc under the FSA's Disclosure and Transparency Rules.

For further information, please contact:

Hydrogen Group plc +44 (0)20 7090 7737

Madeleine Scrafton

Oriel Securities Limited (Nominated Adviser) +44 (0)20 7710 7600

Nicholas How

Tunga Chigovanyika