Transport for London (TfL) in the UK has awarded contracts worth £500m to three construction companies for the construction of complex tunnels and highways.

The construction companies who received these contracts include Costain, Morgan Sindall and Skanska. They will be carrying out these projects over the next four years.

The new contract will see the companies working with TfL to design and build some of London's most high-profile and complex road improvement projects.

"The new contract will see the companies working with TfL to design and build some of London's most high-profile and complex road improvement projects."

TfL projects and programmes director Nick Fairholme said: “We are delighted to be working with Costain, Morgan Sindall and Skanska over the next four years on a range of high-profile and complex civil engineering projects.

“Each contractor brings something unique to the table and all have experience in designing and building major schemes, which will ensure Londoners get these key projects delivered in the most effective and efficient way.”

The improvement works will transform highways, reduce dangers on the roads, improve journey reliability and encourage cycling and walking.

Skanska operations director Mark Shopland said: “We are proud to be involved in this framework and to be contributing towards these high-profile project that will improve the road network for people in London.”

The civil engineering works also include schemes such as the proposed Fiveways scheme in Croydon and the exclusion of the Vauxhall gyratory, and upgrading the A40 Westway structure.