The idea of a bridge between the UK and France is "daft as a brush" and would cost "hundreds of billions" of pounds.
Boris Johnson has suggested the creation of a bridge between the UK and France, although the Government has said there are no specific plans for one.
Architect Steve Lawrence, who prepared the first master plan for the London Olympic Games, told Jamie East and Melanie Sykes: "This idea is daft. It’s daft as a brush."
He thinks it would cost "hundreds of billions" of pounds and said the idea was "looked at decades ago. We built a tunnel instead."
The architect said the project would be "technically extremely difficult. It would be, as major projects go, it would be a major project, up there with the very very biggest of them."
He thinks the bridge idea is "a bit of a red herring and it needs to be taken with a big pinch of salt."
Although Lawrence admitted "big iconic projects" can be "very necessary for lifting national spirits."
Listen to the full interview above