White Young Green, the building consultants with an operation in Birmingham, has expanded with the acquisition of a privately-owned mechanical and electrical services business.

The company has paid an initial £1.8 million in cash and shares for London- based Doy Webster.

A further payment of up to £700,000 will be triggered if Doy Webster meets its targets in its first year of trading under WYG's ownership.

The company has expertise in the high rise residential, mixed us development and healthcare markets.

It works extensively for major contractors offering design and build services to customers.

In the year to March 31, 2005 Doy's profit after tax was £128,690 on turnover of £2.3 million.

"The acquisition of Doy Webster further strengthens White Young Green's engineering business in the important South-east of England," chief executive John Purvis said.

Latest figures from WYG showed the company increased its pretax profits by 40 per cent to £8.1 million on turnover 60 per cent up at £143.9 million in the 12 months to June 30.

The company, which recently relocated its Birmingham offices to the Aqua Building in Lionel Street, provides clients with a wide range of engineering, environmental, rail and project management services.