Holding(s) in Company

AMEC plc

20 July 2011

In accordance with the Disclosure and Transparency Rules (DTR) 5, we have received a notification from BlackRock, Inc stating that, as at 15 July 2011, they held a notifiable interest of 36,429,950 shares in AMEC plc, which represents 10.97% of the voting rights in the Company. This holding comprises an indirect holding of 35,186,556 (10.60%) and a CFD holding of 1,243,394 (0.37%).

The reason for the notification is stated as: "An acquisition or disposal of voting rights".

The notification states that the threshold that has been crossed or reached is that the holding has gone below 11%.

The notification also states that the chain of controlled undertakings through which the voting rights are effectively held is BlackRock Investment Management (UK) Limited.

Kim Hand

Assistant Company Secretary