Deal sealed this morning following OFT's green light for aquisition on Friday

Alfred McAlpine shares stopped trading on the Stock Exchange at 8am this morning following the completion of its £561m acquisition by Carillion.

Carillion chief executive John McDonough said: “"The acquisition of Alfred McAlpine is a major milestone in Carillion’s development.

The combined group will be one of the UK's foremost support services businesses, with significantly enhanced capabilities to provide integrated solutions for services, buildings and infrastructure, from private finance to life-time asset management.”

The Office of Fair Trading gave the deal the green light on Friday last week.