Holding(s) in Company

Ricardo PLC
29 November 2007



TR-1(i): NOTIFICATION OF MAJOR INTERESTS IN SHARES

1. Identity of the issuer or the underlying issuer of existing shares to which
voting rights are attached (ii):

Ricardo plc

2. Reason for the notification (please state Yes/No): ( )

An acquisition or disposal of voting rights: ( Yes )

An acquisition or disposal of financial instruments which may result in the
acquisition of shares already issued to which voting rights are attached: ( No )

An event changing the breakdown of voting rights: ( No )

Other (please specify) : ( No )

3. Full name of person(s) subject to the notification obligation (iii):
Aviva plc & its subsidiaries

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

BNY Norwich Union Nominees Limited 347,821*
Chase Nominees Limited 130,186*
Chase GA Group Nominees Limited 1,187,340*
CUIM Nominee Limited 333, 827*
Vidacos Nominees Limited 27,862*

* denotes direct interest
Chase Nominees Limited 3,790
CUIM NomieeLimited 56,393
Delta Lloyd Europees Deelnemingen Fonds 1,368,661
Vidacos Nominees Limited 738,126

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

27 November 2007

6. Date on which issuer notified:

29 November 2007

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

4% - 3% Change at Direct Interest level

8. Notified details:


A: Voting rights attached to shares

Class/type of shares if possible using  Situation previous to the Triggering
the ISIN CODE                           transaction (vi)
                                        Number of      Number of voting Rights
                                        shares         (viii)

GB0007370074                               3,296,842                 3,296,842

Resulting situation after the triggering transaction (vii)

Class/type of shares if  Number of   Number of voting rights % of voting
possible using the ISIN  shares      (ix)                    rights
CODE
                         Direct      Direct (x)  Indirect    Direct   Indirect
                                                 (xi)

GB0007370074             2,027,036   2,027,036   2,166,970     3.98%      4.26%

B: Financial Instruments
Resulting situation after the triggering transaction (xii)

Type of      Expiration Exercise/      Number of voting rights that may % of
financial    Date       Conversion     be acquired if the instrument is voting
instrument   (xiii)     Period/ Date   exercised/ converted.            rights
                        (xiv)


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

          4,194,006                                8.24%

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

See section 4

Proxy Voting:

10. Name of the proxy holder:
See section 4

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

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

13. Additional information:
Figures are based on total number of voting rights of 50,869,037

14. Contact name:
Neil Whittaker

15. Contact telephone number:
01603 684420




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