Holding(s) in Company

AMEC plc

15 June 2010

In accordance with the Disclosure and Transparency Rules (DTR) 5, we have today received a notification from BlackRock, Inc stating that, as at 10 June 2010, they held a notifiable interest of 38,792,222 shares in AMEC plc, which represents 11.72% of the voting rights in the Company. This holding comprises an indirect holding of 36,657,206 (11.07%) and a CFD holding of 2,135,016 (0.64%).

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 has gone below 12%.

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