Transaction in Own Shares

AMEC plc

18 April 2011

Transaction in Own Shares

AMEC plc (the "Company") announces that today, it purchased 250,000 of its ordinary shares of 50p each at 1142.83 pence per share through Deutsche Bank AG. All of these shares will be held as Treasury shares and utilised, as normal practice, to satisfy the obligations of the Company's savings related Share Option Schemes. This purchase equates to approximately 0.08 per cent of AMEC's current issued share capital excluding Treasury shares prior to this purchase.

AMEC's total issued share capital is 337,965,871 shares. Following the purchase of these shares, AMEC plc holds 5,894,070 of its shares in Treasury and has 332,071,801 ordinary shares in issue excluding Treasury shares.

AMEC plc +44 (0)20 7539 5800

Sue Scholes - Director of Communications

Nicola-Jane Brooks - Investor Relations

AMEC plc

AMEC (LSE: AMEC) is a focused supplier of high-value consultancy, engineering and project management services to the world's oil and gas, minerals and metals, clean energy, water and environmental sectors. With annual revenues of almost £3 billion, AMEC designs, delivers and maintains strategic and complex assets for its customers. The company employs some 22,000 people in around 40 countries worldwide. See amec.com