Annual Information Update

Clarkson PLC
15 May 2006


                                  CLARKSON PLC

15 May 2006

Annual Information Update for the 12 month period to 15 May 2006.

In accordance with Prospectus Rule 5.2, Clarkson PLC sets out below a summary of
the information which has been published or made available to the public during
the defined period. The information referred to in this Update was up to date at
the time the information was published, but some information may now be out of
date.

Regulatory announces may be viewed at the Company's website at
www.clarksons.co.uk and at the London Stock Exchange's website at
www.londonstockexchange.com/en-gb/pricesnews/marketnews/ under code CKN.

Copies of the documents filed at Companies House may be obtained from:

Companies House
Crown Way,
Cardiff
CF14 3UZ
Email: www.direct.companieshouse.gov.uk


                           ANNUAL INFORMATION UPDATE

  25.05.05   RNS London Stock Exchange Announcement - AGM  www.clarksons.co.uk
             Trading Update
  27.05.05   RNS London Stock Exchange Announcement -      www.clarksons.co.uk
             Directorate Changes - Bob Benton
             (appointment of new non-executive director)
  01.06.05   Electronic filing of resignation of Company   Companies House
             Secretary
             (Resignation of Mr. R.D. Ward)
  01.06.05   Electronic filing of appointment of Company   Companies House
             Secretary
             (appointment of Mr. S.G. Deasey)
  02.06.05   Filing of Form 288a at Companies House        Companies House
             (appointment of Mr. Robert John Benton)
  07.06.05   RNS London Stock Exchange Announcement -      www.clarksons.co.uk
             Change of Company Secretary
             (appointment of new Company Secretary)
  17.06.05   RNS London Stock Exchange Announcement -      www.clarksons.co.uk
             Holding in Company
             (notification of shareholding by Lloyds TSB
             Group PLC)
  22.06.05   Filing of Annual Return at Companies House    Companies House
  08.07.05   Filing of Annual Report and Accounts at       Companies House
             Companies House
  24.08.05   RNS London Stock Exchange Announcement -      www.clarksons.co.uk
             Notice of Results
  25.08.05   RNS London Stock Exchange Announcement - IFRS www.clarksons.co.uk
             Statement
  26.08.05   RNS London Stock Exchange Announcement -      www.clarksons.co.uk
             Holding in Company
             (notification of shareholding by Lloyds TSB
             Group PLC)
  31.08.05   RNS London Stock Exchange Announcement -      www.clarksons.co.uk
             Interim results for the six months ended 30
             June 2005
12.09.2005   RNS London Stock Exchange Announcement -      www.clarksons.co.uk
             Acquisition of MV Pacific Dhow
  23.09.05   RNS London Stock Exchange Announcement -      www.clarksons.co.uk
             Holding in Company
             (notification of shareholding by Lloyds TSB
             Group PLC)
30.09.2005   RNS London Stock Exchange Announcement -      www.clarksons.co.uk
             Holding in Company
             (notification of shareholding by Lloyds TSB
             Group PLC)
01.11.2005   RNS London Stock Exchange Announcement -      www.clarksons.co.uk
             Holding in Company
             (notification of shareholding by Barclays
             PLC)
03.11.2005   RNS London Stock Exchange Announcement -      www.clarksons.co.uk
             Acquisition - Clarksons and Plowright
12.12.2005   RNS London Stock Exchange Announcement -      www.clarksons.co.uk
             Channel Freight Ferries Closes Service
13.12.2005   RNS London Stock Exchange Announcement -      www.clarksons.co.uk
             Holding in Company
             (notification of shareholding by Barclays
             PLC)
14.12.2005   RNS London Stock Exchange Announcement -      www.clarksons.co.uk
             Appointment of Joint Broker
04.01.2006   RNS London Stock Exchange Announcement -      www.clarksons.co.uk
             Acquisition of Plowright
25.01.2006   Filing of Form 403a - Declaration of          Companies House
             satisfaction in full or in part of mortgage
             or change
01.02.2006   Regulatory Announcement - Admission of        www.clarksons.co.uk
             Securities
02.02.2006   Filing of Form 88(2) - Return of Allotment of Companies House
             Shares
16.02.2006   RNS London Stock Exchange Announcement -      www.clarksons.co.uk
             Holding in Company
             (notification of shareholding by Barclays
             PLC)
23.02.2006   RNS London Stock Exchange Announcement -      www.clarksons.co.uk
             Holding in Company
             (notification of shareholding by Barclays
             PLC)
02.03.2006   RNS London Stock Exchange Announcement -      www.clarksons.co.uk
             Holding in Company
             (notification of shareholding by Lloyds TSB
             Group PLC)
29.03.2006   RNS London Stock Exchange Announcement -      www.clarksons.co.uk
             Preliminary results for the 12 months ended
             31 December 2005
31.03.2006   RNS London Stock Exchange Announcement -      www.clarksons.co.uk
             C.I.F. Trading Limited Launch
04.04.2006   RNS London Stock Exchange Announcement -      www.clarksons.co.uk
             Change in Director's Shareholding
06.04.2006   RNS London Stock Exchange Announcement -      www.clarksons.co.uk
             Holding in Company
             (notification of shareholding by Lloyds TSB
             Group PLC)
27.04.2006   RNS London Stock Exchange Announcement -      www.clarksons.co.uk
             Change in Director's Shareholding

INFORMATION SENT TO SHAREHOLDERS

Information on Clarkson PLC can be found on the website www.clarksons.co.uk the
text of which is updated on a regular basis, however it should be noted that
some information on the website may be out-of-date at the time of this
announcement.

     31.08.2005   Interim Report 2005
     20.04.2006   Annual Report and Financial Statements 2005
     20.04.2006   Notice of AGM and Form of Proxy

These reports can be viewed at www.clarksons.co.uk/FinancialReports/

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




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