Director/PDMR Shareholding

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

WS Atkins plc (the "Company") was notified on 16 January 2013 by the Trustee of the Atkins Share Incentive Plan (the "Plan") that on 15 January 2013 in London Dr. Martin Grant, a person discharging managerial responsibilities of the Company, acquired 24 ordinary shares of 0.5 pence each in the Company at £7.667714 following the reinvestment of dividends for shares held in the Plan. This acquisition equated to 0.00002% of the voting issued share capital.

Dr. Grant's total interest in shares following this notification is 35,160 ordinary shares, representing 0.035% of the voting issued share capital of WS Atkins plc.

WS Atkins plc (the "Company") was further notified on 16 January 2013 by the Trustee of the Atkins Share Incentive Plan (the "Plan") that on 15 January 2013 in London Dr. Uwe Krueger, a director of the Company, acquired 2 ordinary shares of 0.5 pence each in the Company at £7.667714 following the reinvestment of dividends for shares held in the Plan. This acquisition equated to 0.000002% of the voting issued share capital.

Mr. Krueger's total interest in shares following this notification is 20,179 ordinary shares, representing 0.02% of the voting issued share capital of WS Atkins plc.

WS Atkins plc (the "Company") was further notified on 16 January 2013 by the Trustee of the Atkins Share Incentive Plan (the "Plan") that on 15 January 2013 in London Mr. Richard Webster, a person discharging managerial responsibilities of the Company, acquired 16 ordinary shares of 0.5 pence each in the Company at £7.667714 following the reinvestment of dividends for shares held in the Plan. This acquisition equated to 0.00002% of the voting issued share capital.

Mr. Webster's total interest in shares following this notification is 1,253 ordinary shares, representing 0.001% 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

16 January 2013