Employing around 50,000 staff and booking over £4bn in annual revenue, Wolverhampton-based Carillion is one of the UK's leading support services and construction firms.

The company's interim statement for its third quarter, issued in October, suggested the company's performance is robust with key contracts won including a blockbuster joint venture with Telent to supply BT and Openreach on network installations and support worth about £1bn. The company also has deep hooks into the public sector.

Carillion's external-facing IT Services operation was a small part of the overall company and in January 2009 won a five-year contract to supply Cisco networking gear to Motherwell College and in March followed that with a deal to provide managed services to two Birmingham-based colleges. It then won an extension for Heathrow Terminal 5 to an existing deal to provide BAA. However, it then sold the operation to Capita in July 2009 for about £36m.

In its company report for 2008, Carillion said it was making a success of its acquisition of Alfred McAlpine but did not comment on state of internal IT investment.