Director/PDMR Shareholding

NOTIFICATION OF TRANSACTIONS OF DIRECTORS, PERSONS DISCHARGING MANAGERIAL RESPONSIBILITY OR CONNECTED PERSONS

Mr. Alun Hughes Griffiths, a director and person discharging managerial responsibilities of WS Atkins plc (the "Company"), notified the Company on 29 January 2010 that on that day in London he purchased 449 ordinary shares of 0.5 pence each in the Company at £6.0282 per share pursuant to the Company's Dividend Reinvestment Plan. This equated to 0.00045% of the voting issued share capital.

Mr. Griffiths further notified the Company on 29 January 2010 that on that day in London his wife, Mrs. Mary Christine Griffiths, purchased 7 ordinary shares of 0.5 pence each in the Company at £6.0282 per share pursuant to the Company's Dividend Reinvestment Plan. This equated to 0.00001% of the voting issued share capital.

Mr. Griffiths' total interest in shares following this notification is 36,976 ordinary shares, representing 0.037% of the voting issued share capital of WS Atkins plc.

This notice is given in fulfillment of the obligations under DTR 3.1.4R (1).

Helen Baker

Assistant Company Secretary

1 February 2010

Telephone: +44 (0) 1372 752401