Transaction in Own Shares

23 December 2010

IDOX plc ("IDOX" or the "Company")

Transaction in Own Shares

Pursuant to the general authority given to the Company by the shareholders and under the share repurchase programme announced on 1 November 2010, the Company announces that on 22 December 2010 it purchased a total of 25,000 of its own ordinary shares to be held in treasury at a price of 13.8 pence per share.

This represents 0.007 per cent. of the issued share capital of the Company.

In accordance with Disclosure and Transparency Rule 5.6.1, following this purchase, there are 4,173,000 shares held in treasury and the total number of voting rights in IDOX plc is 339,985,336

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, IDOX under the FSA's Disclosure and Transparency Rules.

IDOX plc +44 (0) 20 7332 6000

Richard Kellett-Clarke, Chief Executive

William Edmondson, Chief Financial Officer

Investec Investment Banking +44 (0) 20 7597 5104

Andrew Pinder

Cara Griffiths

IDOX's shares are quoted on the Alternative Investment Market (AIM) of the London Stock Exchange (symbol IDOX.L).

The Company's news releases are available on the Company's web site: http://investors.idoxgroup.com/