Directors' Dealings

Ricardo PLC
20 December 1999


               RICARDO PLC - DIRECTORS' INTERESTS IN SHARES

On 20 December 1999 Ricardo Quest Trustees Limited, a wholly-owned subsidiary of
Ricardo plc, as trustee of the Ricardo Qualifying Employee Share Ownership Trust
(the 'QUEST') acquired by subscription, at a price of 457p per share, a total of
27,339 ordinary shares of 25p each in Ricardo plc (all of which are to be used
to satisfy options exercised under the Company's saving-related share option
scheme). As potential beneficiaries under the QUEST, each director of Ricardo
plc is treated as being interested in all shares acquired by the QUEST. As of
today's date, the QUEST holds 87,928 shares in the Company.

The directors of Ricardo plc who may be considered to be potential beneficiaries
of the shares in this notification are:

Sir Noel Davies
C W Foreman
P T Ward
R J Westhead
A R Goodburn 
J R Needham

Name of contact and telephone number for queries:

M Wightman:   01926 319335

Name and signature of authorised company official responsible for making this
notification...............................M WIGHTMAN........................