Holding(s) in Company

Ricardo PLC
26 February 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: ( )

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) : Restatement of Historic Interest in Compliance with the
FSA's new Disclosure and Transparency Rules (x)

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):
Register Holder:
BNY Norwich Union Nominees Limited - 548,092
Chase GA Group Nominees Limited - 1,274,909
Chase Nominees Limited - 145,186
CUIM Nominee Limited - 499,673
Vidacos Nominees Limited - 36,373
(all above are direct interests)

Chase Nominees Limited - 1,790
CUIM Nominee Limited - 56,393
Vidacos Nominees Limited - 734,426

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

6. Date on which issuer notified:
23 February 2007

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

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)


Resulting situation after the triggering transaction (vii)

Class/type of shares if    Number of   Number of voting      % of voting
possible using the ISIN    shares      rights (ix)           rights
CODE
                           Direct      Direct (x)  Indirect  Direct   Indirect
                                                   (xi)
Ordinary
Shares                     2,504,233   2,504,233   792,609     4.94%      1.56%
GB0007370074

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

3,295,842                                6.50%

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 based on total number of voting rights of 50,698,733

14. Contact name:
Neil Whittaker

15. Contact telephone number:
01603 684420




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