Director/PDMR Shareholding

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

Mr. Simon Moon, a person discharging managerial responsibilities of WS Atkins plc (the "Company"), notified the Company on 18 August 2010, that on 17 August 2010 in London he acquired 5,445 ordinary shares of 0.5 pence each in the Company following the exercise of nil cost options made under the Atkins Long Term Incentive Plan and the Atkins Deferred Share Plan. Of the 5,445 shares acquired, 2,779 shares were sold to meet a tax liability at a sale price of £7.4475 per share. The acquisition of 5,445 shares equated to 0.0054% of the voting issued share capital and the 2,666 retained shares equated to 0.0027% of the voting issued share capital.

Mr. Moon's total interest in shares following this notification is 5,117 ordinary shares, representing 0.005% of the voting issued share capital of WS Atkins plc.

Ms. Sara Lipscombe-Nott, a person discharging managerial responsibilities of WS Atkins plc (the "Company"), notified the Company on 18 August 2010, that on 17 August 2010 in London she acquired 3,636 ordinary shares of 0.5 pence each in the Company following the exercise of nil cost options made under the Atkins Long Term Incentive Plan and the Atkins Deferred Share Plan. Of the 3,636 shares acquired, 1,855 shares were sold to meet a tax liability at a sale price of 7.4475 per share. The acquisition of 3,636 shares equated to 0.0036% of the voting issued share capital and the 1,781 retained shares equated to 0.0018% of the voting issued share capital.

Ms. Lipscombe-Nott's total interest in shares following this notification is 3,006 ordinary shares, representing 0.003% 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

Telephone: +44 (0) 1372 752456

18 August 2010