Director/PDMR Shareholding

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

Alun Griffiths a director of WS Atkins plc (the "Company"), notified the Company on 28 September 2011, that on that day in London he purchased 917 ordinary shares of 0.5 pence each in the Company at a price of £5.4517 per share. The shares are held by Alun Griffiths directly. The acquisition of 917 shares equated to 0.0009% of the voting issued share capital.

Alun Griffiths' total interest in shares following this notification is 45,313 ordinary shares, representing 0.0453% 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).

Ashley Gerrard

Company Secretarial Assistant - Graduate Trainee

Telephone: +44 (0) 1372 752576

29 September 2011