Holding(s) in Company

AMEC plc

20 April 2010

In accordance with the Disclosure and Transparency Rules (DTR) 5, we have received a notification from BlackRock, Inc stating that, as at 16 April 2010, they held a notifiable interest of 43,062,557 shares in AMEC plc, which represents 12.99% of the voting rights in the Company. This holding comprises an indirect holding (12.08%) and a CFD holding (0.91%).

The reason for the notification is stated as: "An acquisition or disposal of voting rights" and "an acquisition or disposal of instruments with similar economic effect to qualifying financial instruments".

The notification states that the threshold that has been crossed or reached is that the holding is now below 13%.

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

C L Fidler

Deputy Company Secretary