Holding(s) in Company

Ricardo PLC
16 October 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):

Standard Life Investments Ltd


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

Vidacos Nominees


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

25 July 2007


6. Date on which issuer notified:

15 October 2007


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

4%


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                            1,990,267      1,990,267


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)
GB0007370074                2,030,267   2,030,267            4.005%


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

2,030,267                                    4.005%


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

Standard Life Investments Ltd


10. Name of the proxy holder: 


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:



14. Contact name:

Alison Kennedy
Corporate Governance Manager - Engagement
Standard Life Investments Ltd


15. Contact telephone number:

[phone]



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