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 5 April 2011, that on 31 March 2011 in London he purchased 60 ordinary shares of 0.5 pence each in the Company at £7.10 per share following the reinvestment of dividends for shares held in an ISA. This equated to 0.00006% of the voting issued share capital.

Mr. Griffiths' total interest in shares following this notification is 44,287 ordinary shares, representing 0.044% of the voting issued share capital of WS Atkins plc.

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

Rachel Hunter

Company Secretarial Assistant

Telephone: +44 (0) 1372 752456

5 April 2011