Transaction in Own Shares

AMEC plc

3 January 2013

Transaction in Own Shares

On 21 February 2012, AMEC plc ("the Company") announced that it intended to complete a £400 million share buyback programme within the next twelve months.

Further to the announcement on 21 December 2012 of its irrevocable, non-discretionary Prohibited Period Share Repurchase Programme, the Company announces that under the terms of that programme it has today purchased for cancellation 156,000 ordinary shares in the Company at a price of 1043.4234 pence per share through Bank of America Merrill Lynch. This purchase equates to approximately 0.05 per cent of AMEC's current issued share capital excluding Treasury shares prior to this purchase.

The highest purchase price paid was 1047.00 pence per share and the lowest purchase price paid was 1040.00 pence per share.

Following this change AMEC's total issued share capital is 307,666,570 ordinary shares, of which 7,088,142 are registered as Treasury Shares, leaving a balance of 300,578,428 shares with voting rights.

Cumulative purchases to date under the buyback programme amount to approximately £360.98 million.

Going forward, it is the Company's intention that the significant majority of the shares purchased under this programme will be cancelled.

AMEC plc +44 (0)20 7429 7500

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.