Transaction in Own Shares

AMEC plc

21 December 2012

Transaction in Own Shares

Prohibited Period Share Repurchase Programme

AMEC plc ("AMEC") announces that it has entered into irrevocable, non-discretionary arrangements with Deutsche Bank AG, London Branch and Merrill Lynch International to purchase ordinary shares of 50 pence each on its own behalf for cancellation during its prohibited period. The Prohibited Period Share Repurchase Programme will commence on 1 January 2013 and ends on the date of publication of AMEC's preliminary results, for the year ending 31 December 2012, on 14 February 2013.

Any acquisitions will be effected within certain pre-set parameters, and in accordance with both AMEC's general authority to repurchase shares and Chapter 12 of the Listing Rules.

Further enquiries:

AMEC plc +44 (0)20 7539 5800

Sue Scholes - Director of Communications

Nicola-Jane Brooks - Head of 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, mining, 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 29,000 people in around 40 countries worldwide. See amec.com.