The former chairman of the Olympic Delivery Authority (ODA) has warned that political squabbling is threatening the delivery of the London Olympic Games.

Jack Lemley said he resigned as the chairman of the ODA because he did not want to have his reputation for delivering projects on time ruined. He said: “I felt it better to come home now than face that in five or six years.”

In an interview with The Idaho Statesman Lemley said: “I went there to build things, not to sit and talk about it, so I felt it best to leave and come home.”

Lemley said there had been a “huge amount of local politics” involved in moving the 300 businesses from the 700-acre Olympic site in east London. He said that the issue was the “kind of thing that confuses and frustrates the process”.