Enviros had a turnover of £29.5m in 2006.
 
Ian Grice, Group Chief Executive of Alfred McAlpine said: 'Environmental issues continue to grow in importance for business, with significant focus on climate change and energy consumption, as well as other environmental issues, such as waste management and brownfield regeneration. I believe that Enviros will add significantly to our capabilities in this area.'
 
As part of the Alfred McAlpine group, Enviros will continue to trade under the Enviros brand name.