Holding(s) in Company

Adventis Group PLC
07 March 2007



TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES

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

2.  Reason for the 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           Recalculation due to implementation of DTR 5      ( X)
    (specify):

3.  Full name of person(s) subject to the notification obligation:

    Morgan Stanley Securities Limited

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

5.  Date of the transaction (and date on which the threshold is crossed
    or reached if different):

6.  Date on which issuer notified:

    6 March 2007

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

    3%

8.  Notified details:


A. Voting rights attached to shares

Class/type of shares (if possible using the ISIN code) GB00B01G6R56

Situation previous to  Resulting situation after the triggering transaction
   the triggering
     transaction

Number of  Number of  Number of Number of voting     % of voting rights
Shares     Voting     shares    rights
           Rights
                      Direct    Direct    Indirect   Direct    Indirect

1,250,000  1,250,000  1,250,000 1,250,000            3.17%


B. Financial Instruments

Resulting situation after the triggering transaction
Type of       Expiration   Exercise/          Number of voting  % of voting
financial     date         Conversion Period/ rights that may   rights
instrument                 Date               be acquired if
                                              the instrument is
                                              exercised/
                                              converted



Total (A+B)

Number of voting rights              % of voting rights

1,250,000                            3.17%

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

    n/a

Proxy Voting:

10.  Name of the proxy holder:     n/a

11.  Number of voting rights proxy  n/a
     holder will cease to hold:

12.  Date on which proxy holder    n/a
     will cease to hold voting
     rights:

13.  Additional information:       Please note that there has been no
                                   change in Morgan Stanley's discloseable
                                   interest since the previous disclosure
                                   date 06/12/2006. This disclosure has
                                   been restated due to the implementation
                                   of the Transparency Directive

14:  Contact name:                 Gemma Ozbek

15.  Contact telephone number:     020 7677 2449




                      This information is provided by RNS
            The company news service from the London Stock Exchange