Substantial Interests and Non-Public Holdings

At the close of business on 30 June 2007, the Company's issued share capital consisted of 21,854,122 ordinary shares with a nominal value of 3.8 pence each ("Ordinary Shares"), each share having equal voting rights. The Company does not hold any Ordinary Shares in treasury and therefore the total number of Ordinary Shares with voting rights is, 21,854,122.

The following (not being Directors or their families or connected person within the meaning of section 252 of the Companies Act 2006) were, as far as the Directors are aware, interested in 3% or more of the issued Ordinary Shares in the Company:

Advent Private Equity	2,702,913	12.44%
Doughty Hanson & Co Technology Limited	2,551,808	11.75%
AXA Framlington Investment Managers	2,463,150	11.34%
Loudwater Trust Limited	2,105,264	9.69%
Nova General Partner Limited	1,661,359	7.65%
Schroder Investment Management	1,578,947	7.27%
Aberdeen Asset Management	1,194,697	5.50%
USS	1,022,500	4.71%
Gartmore No 1 General Partner Scottish Limited Partnership	836,026	3.73%
Hexagon Investment LLC	810,231	3.73%

At the close of business on 30 June 2007, Executive Director, Mike Robinson beneficially held 228,810 shares which together with share options of 896,435 represents a holding of approximately 4.98%.

In accordance with the AIM Rules (Rule 26), in so far as the Company is aware, the percentage of the Company's issued share capital that is not in public hands is 36.93%. Mike Robinson, Jose David and John Cunningham, are the only directors that currently hold shares in the Company.