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 27 January 2012 that on that day in London he purchased 459 ordinary shares of 0.5 pence each in the Company at £6.98 per share pursuant to the Company's Dividend Reinvestment Plan. This equated to 0.00046% of the voting issued share capital.

Mr. Griffiths further notified the Company on 27 January 2012 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 £6.98 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 47,174 ordinary shares, representing 0.047% 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 27 January 2012 that on that day in London he purchased 97 ordinary shares of 0.5 pence each in the Company at £6.98 per share pursuant to the Company's Dividend Reinvestment Plan. This equated to 0.0001% of the voting issued share capital.

Mr. Thomas' total interest in shares following this notification is 6,896 ordinary shares, representing 0.0069% 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

27 January 2012

Telephone: +44 (0) 1372 752456