Holding(s) in Company

Ricardo PLC
23 September 2005

                           SCHEDULE 10
 
             NOTIFICATION OF MAJOR INTERESTS IN SHARES


1)   NAME OF COMPANY

     RICARDO PLC


2)   NAME OF SHAREHOLDER HAVING A MAJOR INTEREST

     ARTEMIS INVESTMENT MANAGEMENT LTD


3)   Please state whether notification indicates that it is in respect of 
     holding of the Shareholder named in 2 above or in respect of a 
     non-beneficial interest or in the case of an individual holder if it is a
     holding of that person's spouse or children under the age of 18

     AS IN 2 ABOVE


4)   Name of the registered holder(s) and, if more than one holder, the 
     number of shares held by each of them.

          
     
     INSTITUTIONAL SPECIAL SITUATIONS     338,049
     BARCLAYS UK SMALLER COMPANIES        200,000
     L&G (BARCLAYS) MANAGED OPPS TRUST    300,000
     PEARSON                              418,274
     PRUDENTIAL STAFF PENSION SCHEME      489,660
     AKZO NOBEL PENSION SCHEME            608,274
     ARTEMIS SPECIAL SITUATIONS         3,362,500

5)   Number of shares/amount of stock acquired.

     NOT DISCLOSED


6)   Percentage of issued Class (any treasury shares held by company should not 
     be taken into account when calculating percentage)

     N/A

7)   Number of shares/amount of stock disposed

     NOT DISCLOSED

8)   Percentage of issued Class (any treasury shares held by company should not 
     be taken into account when calculating percentage)

     N/A

9)   Class of security

     ORDINARY SHARES


10)  Date of transaction

     22 SEPTEMBER 2005
  

11)  Date company informed

     23 SEPTEMBER 2005


12)  Total holding following this notification

     5,716,757

               
13)  Total percentage holding of issued class following this notification
     (any treasury shares held by company should not be taken into account when
     calculating percentage)

     11.4


14)  Any additional information



15)  Name of contact and telephone number for queries

     M WIGHTMAN
     01273 794416


16)  Name and signature of authorised company official responsible for 
     making this notification


     Date of Notification      23 SEPTEMBER 2005



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