Transaction in Own Shares

AMEC plc

21 February 2012

Transaction in Own Shares

AMEC plc (the "Company") announces that today, it purchased 220,000 of its ordinary shares of 50p each at an average price of 1104.91 pence per share through Deutsche Bank AG. The highest price paid was 1110.00 pence per share and the lowest price paid was 1100.00 pence per share. All of these shares will be held as Treasury shares and utilised, as in the past, to satisfy the obligations of the Company's Savings Related Share Option Schemes. This purchase equates to approximately 0.07 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 4,808,711 of its shares in Treasury and has 333,157,160 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 (LSE: AMEC) is a focused supplier of consultancy, engineering and project management services to its customers in the world's oil and gas, minerals and metals, clean energy, environment and infrastructure markets. With annual revenues of some £3.3 billion, AMEC designs, delivers and maintains strategic and complex assets and employs over 27,000 people in around 40 countries worldwide. See amec.com.