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 6 September 2012 that on 31 August 2012 in London he purchased 800 ordinary shares of 0.5 pence each in the Company at £6.64 per share pursuant to the Company's Dividend Reinvestment Plan. This equated to 0.0008% of the voting issued share capital.

Mr. Griffiths further notified the Company on 6 September 2012 that on 31 August 2012 in London his wife, Mrs. Mary Christine Griffiths, purchased 15 ordinary shares of 0.5 pence each in the Company at £6.64 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 34,973 ordinary shares, representing 0.035% of the voting issued share capital of WS Atkins plc.

Mr. Neil James Corfield Thomas, a person discharging managerial responsibilities of WS Atkins plc (the "Company"), notified the Company on 6 September 2012 that on 31 August 2012 in London he purchased 222 ordinary shares of 0.5 pence each in the Company at £6.64 per share pursuant to the Company's Dividend Reinvestment Plan. This equated to 0.0002% of the voting issued share capital.

Mr. Thomas' total interest in shares following this notification is 7,118 ordinary shares, representing 0.0071% 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).

Rachel Hunter

Company Secretarial Assistant

6 September 2012

Telephone: +44 (0) 1372 752456