Major interest

IDOX PLC
21 March 2007



IDOX plc
21st March 2007


                                    IDOX plc
                           (the 'Company' or 'IDOX')


                   NOTIFICATION OF MAJOR INTERESTS IN SHARES


In conformity with the Transparency Directive IDOX is required to announce to
the market the receipt of notifications of major interests in its shares.

IDOX received notice on 21 March 2007 in accordance with the Disclosure and
Transparency Rules that TriVest VCT plc has a notifiable interest in 6,366,667
ordinary shares of 1p each in the Company, being 3.26% of the issued ordinary
share capital of IDOX.


John McNicol
Company Secretary



TR-1: NOTIFICATION OF MAJOR INTERESTS IN SHARES


1.      Identity of the issuer or the underlying issuer of                                         IDOX PLC
existing shares to which voting rights are attached




2.      Reason for notification (please tick the appropriate box or boxes)
An acquisition or disposal of voting rights                                                        (   )
An acquisition or disposal of financial instruments which may result in the acquisition of         (   )
shares already issued to which voting rights are attached
An event changing the breakdown of voting rights                                                   (   )
Other (please specify):  Initial notification of major interest due to change of thresholds        ( X )
as per Transparency Directive - DTR 5.1.2




3.      Full name of person(s) subject to the notification                                 TriVest VCT plc
obligation

4.      Full name of shareholder(s) (if different from 3.)                                        As Above

5.      Date of the transaction (and date on which the threshold is                          20 March 2007
crossed or reached, if different)

6.      Date on which issuer notified                                                        21 March 2007

7.      Threshold(s) that is/are crossed or reached                                                     3%

8.      Notified details:


A: Voting rights attached to shares
   Class / type of     Situation previous     Resulting situation after the triggering transaction
 shares (if possible   to the triggering
using the ISIN CODE)      transaction
                      Number of Number of   Number of   Number of voting rights   % of voting rights
                       shares     voting      shares
                                  rights      Direct      Direct     Indirect     Direct    Indirect
Ordinary Shares of 10 6,366,667 6,366,667   6,366,667    6,366,667       -        3.26%         -
        pence

ISIN
  GB0002998192




B: Financial Instruments
Resulting situation after the triggering transaction
Type of financial   Expiration    Exercise /           Number of voting rights that    % of voting
instrument          date          Conversion period /  may be acquired if the          rights
                                  date                 instrument is exercised /
                                                       converted
        N/A




Total (A + B)
              Number of voting rights                               % of voting rights
                     6,366,667                                            3.26%




9.      Chain of controlled undertakings through which the voting rights and / or the financial instruments are
effectively held, if applicable



Proxy voting:
10.  Name of the proxy holder                                                                      N/A
11.  Number of voting rights proxy holder will cease to hold                                       N/A
12.  Date on which proxy holder will cease to hold voting rights                                   N/A
13.  Additional information                                         Calculations based on total voting
                                                                 rights of 195,260,900 announced on 20
                                                                                         December 2006


14.  Contact name                                                                        Sarah Penfold
15.  Contact telephone number                                                            020 7925 3323




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