AVEVA Group PLC - Holding(s) in Company

RNS Number:0991S
AVEVA Group PLC
10 April 2008

TR-1: notification of major interests in shares

1. Identity of the issuer or the underlying issuer of existing Aveva Group Plc
shares to which voting rights are attached:

2. Reason for the notification (please tick the appropriate box or boxes):

An acquisition or disposal of voting rights X

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

3. Full name of person(s) subject to the notification obligation HSBC Holdings Plc

4. Full name of shareholder(s) (if different from 3.) HSBC Bank plc
HSBC Financial Products (France)
Sinopia Asset Management (UK) Limited

5. Date of the transaction and date on which the threshold is 8th April 2008
crossed or reached(i):

6. Date on which issuer notified: 10th April 2008

7. Threshold(s) that is/are crossed or reached: 5%

8. Notified details:

A: Voting rights attached to shares

Class/type of Situation previous to the Resulting situation after the triggering transaction
shares Triggering transaction

if possible Number of Number of Number of Number of voting % of voting rights
using the ISIN Shares Voting shares rights
CODE Rights
Direct Direct Indirect Direct Indirect

GB00B15CMQ74 N/A N/A 3,414,483 3,414,483 239,269 5.05% 0.35%

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

Total (A+B)
Number of voting rights % of voting rights

3,653,752 5.41%

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

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: None
14. Contact name: Miriam Radford
15. Contact telephone number: 01223 556619

--------------------------

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

HOLBSGDSXSBGGIG