AK Engineering Services, on Teesside, has won four contracts worth nearly £19m with Anglian Water.

The subsidiary of engineering group Aker Kvaerner, which employs 700 people in Stockton, won the contracts jointly with Skanska.

One of them - the partnership's largest yet - is a £7m project to build a waste water treatment works near Peterborough.

AK is providing mechanical and electrical design with Skanska Construction providing the civil and structural design for the water and wastewater projects.

Malcolm Oliver, president of AK Engineering, said: "This latest project award is the culmination of one year's hard work by the Skanska and Aker Kvaerner team to develop a technically and economically justifiable solution, in partnership with Anglian Water.

"This is the biggest project awarded to the joint venture to date and further consolidates the close working relationship we have with Anglian Water."

Construction on the treatment works is under way and is expected to be completed by the end of the year.

So far, the joint venture between Skanska and Aker Kvaerner has been awarded more than £70m of work, covering nearly 80 schemes spread over the whole of the Anglian Water region, from Lincolnshire to Essex.