Holding(s) in Company

Ricardo PLC
13 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(1):

Ricardo Plc
-------------------------------

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

An acquisition or disposal of voting rights
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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): Notification of holding at Jan 20 2007           X
--------------------------------------------                             -------

3. Full name of person(s) subject to the         JPMorgan Chase & Co.
notification obligation(1):                      
-------------------------------                  --------------------

4. Full name of shareholder(s) (if different     JPMorgan Asset Management (UK)
from 3.)(1):                                     Limited
-------------------------------                  --------------------

5. Date of the transaction (and date on which    N/A
the threshold is crossed or reached if           
different)(1):
-------------------------------                  --------------------

6. Date on which issuer notified:                09/02/2007
-------------------------------                  --------------------

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

8. Notified details:
---------------------------------------------------



A: Voting rights attached to shares

Class/type of Situation previous to Resulting situation after the triggering
shares        the Triggering        transaction(1)
              transaction (1)
if possible
using the     Number   Number of    Number   Number of voting   % of voting
ISIN CODE     of       Voting       of       rights ix          rights
              Shares   Rights       shares
                       viii         Direct   Direct Indirect    Direct Indirect
                                             x      xi
Ricardo Plc
(ISIN
GB0007370074) N/A      N/A               0      0   4,300,920        0    8.48

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
4,300,920                                8.48



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

Total disclosable holding for JPMorgan Chase & Co. : 4,300,920 voting rights
(8.48%)

Holdings by controlled undertakings of JPMorgan Chase & Co. are as follows:
JPMorgan Asset Management (UK) Limited: 4,300,920 voting rights (8.48%)

Proxy Voting:
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           This is notification of disclosable holding as at 20
information:             January 2007.

14. Contact name:        Tracey Young

15. Contact telephone
number:                  020 7325 4513

Annex Notification Of Major Interests In Shares xvi

A: Identity of the person or legal entity subject to the notification
obligation

Full name (including legal form for legal entities)   JPMorgan Chase & Co.

Contact address (registered office for legal          270 Park Avenue, New York,
entities)                                             NY 10017

Phone number                                          001 212 270 6000

Other useful information (at least legal
representative for legal persons)


B: Identity of the notifier, if applicable xvii

Full name            Tracey Young

Contact address      JPMorgan Chase Bank,
                     N.A., 13th floor,
                     125 London Wall,
                     London EC2Y 5AJ

Phone number         020 7325 4513

Other useful information (e.g. functional relationship with
the person or legal entity subject to the notification
obligation)

C: Additional information

Notes
--------------------------

(i) This form is to be sent to the issuer or underlying issuer and to be filed
with the competent authority.



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