Holding(s) in Company

Clarkson PLC
18 August 2006


CLARKSON PLC

HOLDING IN COMPANY

The Company has been notified that on 15 August 2006 Barclays Bank PLC had a
notifiable interest in Clarkson PLC representing 5.97% of the ordinary issued
share capital of the Company.

The shares are held by five Barclays PLC group companies:

Barclays Life Assurance Co Ltd      106,625
Barclays Capital Securities Ltd     204,242
Barclays Global Investors Ltd       756,142
Barclays Bank Trust Company Ltd       9,940
Gerrard Ltd                           8,600


18 August 2006


END

Notes to editors

Background to Clarkson PLC

Clarkson PLC (which is listed on the London Stock Exchange) is acknowledged as
the world's leading shipping services group. Through its unrivalled and
extensive global network of offices it is able to give its clients unique access
to a wide range of shipping services. Clarksons covers shipbroking, research,
publications, derivatives and logistics. Clarksons' strategy is to expand and
develop the group around these key activities.

For further information on Clarkson PLC, please visit the company's website at
www.clarksons.com




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