SEA - 19th October 2007(a)

Not for release, publication or distribution, in whole or in part, in or into or from any jurisdiction where to do so would constitute a violation of the relevant laws of such jurisdiction

Possible offer for Alfred McAlpine plc ("Alfred McAlpine") - Rule 8.4 Announcement

Carillion plc ("Carillion") announces that it has received non-binding letters of intent over 14.89 per cent. of Alfred McAlpine's issued share capital from Schroder Investment Management Limited and New Star Asset Management Limited to accept, if made, a possible offer by Carillion at a value of 570 pence for each Alfred McAlpine share.

The letters of intent relate to 10,582,615 Alfred McAlpine shares held by Schroder Investment Management Limited (on their own behalf and on behalf of discretionary clients) and 4,681,590 Alfred McAlpine shares held by New Star Asset Management Limited, representing in total 14.89 per cent. of Alfred McAlpine's issued share capital. The letters will lapse if an announcement of a firm intention to make an offer is not released by 1 December, 2007. In addition, the letters will also cease to apply to shares which are disposed of by the holder.

There is no certainty that any further approach to the Alfred McAlpine board, or any offer, will be made by Carillion, or as to the form of consideration of any such offer. Carillion reserves the right to make an offer at a reduced level with the recommendation of the board of Alfred McAlpine.

Enquiries

Carillion plc

John Denning Tel: +44 (0) 1902 316 426

Maitland

Angus Maitland Tel: +44 (0) 20 7379 5151