Willmott Dixon is the leader of the pack this year, convincing the judges of a real commitment to sustainability, an ability to offer value for money and investment in its workforce

Major contractor of the year, sponsored by Powerday

Willmott Dixon

This was a tough category to call this year, but amid some stiff competition it was Willmott Dixon that stood out for our judges. The extent of the contractor鈥檚 commitment to sustainability marked it out from rivals as a truly forward-thinking business, with staff incentive payments modified to include sustainable development targets and almost 90% of site waste diverted from landfill in 2010.

The company has also been quick to use partnering to meet the government鈥檚 鈥渕ore for less鈥 agenda, developing an off-the-shelf range of schools in partnership with architects and local government procurement organisation Scape that can cut the cost of delivering a new building by 30%. The judges were also impressed by Willmott Dixon鈥檚 commitment to its workforce. An average of five days training per employee a year, three days more than the industry average, led the judges to describe the firm as one where 鈥減eople are at the heart of what they do.鈥

Costain

Over the past year, Costain has cemented its reputation as one of the UK鈥檚 leading construction and engineering firms. The business reported 14% profit growth and rising turnover, and with an order book of 拢2.5bn is well placed to build on its success.

Kier

Kier has shown agility in adapting to tough market conditions, with a fresh focus on infrastructure yielding more than 拢200m of work in new sectors. The quality of its work remains high, with projects spanning the construction, support services and development sectors.

ISG

ISG hit the headlines this year for being the contractor behind the first venue to be completed on the Olympic park: the 2012 velodrome. The firm鈥檚 redesign of the project鈥檚 cable-net roof, in conjunction with Hopkins, saved 1,000 tonnes of structural steelwork.

Mace

Mace celebrated its 20th anniversary in 2010 - and this contractor really has come of age. Its strength is visible on the Shard, Europe鈥檚 tallest skyscraper, and its work on that scheme was rewarded last year with a 拢120m contract for a neighbouring tower, London Bridge Place.

Wates

In 2010, the company boosted turnover and profit, and had near-perfect records for completing projects on time and on budget. It has also expanded internationally for the first time in its 114-year history, opening in Abu Dhabi. Another sterling performance.

Willmott Dixon

A commitment to sustainability is a central part of this forward-thinking business, with staff incentive payments linked to sustainable development targets. The company also has a good reputation as an employer that invests in training its staff.