Director/PDMR Shareholding

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

Mr. Allan Cook CBE, a director of WS Atkins plc (the "Company"), notified the Company on 23 September 2011, that on that day in London he purchased 2,000 ordinary shares of 0.5 pence each in the Company at a price of £4.8998 per share. The shares are held by Mr. Cook directly. The acquisition of 2,000 shares equated to 0.002% of the voting issued share capital.

Mr. Cook's total interest in shares following this notification is 15,692 ordinary shares, representing 0.016% 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

26 September 2011