Director/PDMR Shareholding

CLARKSON PLC

("the Company")

Director/PDMR Shareholdings

This notification is made in accordance with DTR 3.1.4R(1)(a).

On 24 August 2011, the following transactions over ordinary shares in the Company were made by a Director of the Company.

AL Case

The Restricted Share Award granted on 27 June 2008 matured and 210,000 shares were awarded to Mr Case.

Following this transaction, Mr Case held 495,294 Ordinary Shares representing 2.61% of the Issued Share Capital of the Company and 118,893 Restricted Shares.

The above transaction took place in London on 24 August 2011.

The Company was informed of the above transactions on 24 August 2011.

Name of contact and telephone number for queries:

Steve Deasey - Company Secretary

020-7334-0000.

For and on behalf of Clarkson PLC

Steve Deasey

Date: 24 August 2011