The project to build a bigger roof for the Olympic Stadium has hit problems, the body overseeing it has admitted.
E20 Stadium, the partnership between London Legacy Development Corporation and Newham Council set up to manage the arena, said it had been temporarily set back by “engineering issues”.
Balfour Beatty was awarded the £41M deal to carry out works on the roof as West Ham United Football Club prepares to move in to the stadium in 2016.
An E20 Stadium spokesperson said: “We are building the world’s largest single span cantilever roof which poses some challenging engineering issues.
“This is being managed as part of our quality assurance work and won’t affect our long-term construction programme.”