He ended Ken Livingstone's eight year reign at City Hall shortly after midnight.

His departure is set to trigger a by election.

Mr Johnson has been the MP for Henley and Thame since 2001, when he took over from Michael Heseltine and during his time, his high profile image has both pleased and caused controversy among his constituents.

But it seems his association with the town could now be coming to an end.

A spokesperson from Mr Johnson's campaign said: "On the constituency seat, Boris has repeatedly said that he doesn't think it is compatible to hold his constituency seat in Henley and be Mayor of London. However, he will not make any announcements until the vote is announced on Friday."

Thame Branch Chairman of the Conservative Association, Michael Welply said it would be a loss to Thame and Mr Johnson's constituents, if he were to give up his seat.

He said: "Boris will be extremely good for London like he has been for the Henley and Thame constituency - he has been a good MP and he has worked extremely hard.

"He has tried to fight off the normal problems that Thame faces, like the expansion of urban development. He has been at the forefront to fence off such attacks on our countryside and to stop the increasing urban sprawl. He is liked and he has been very supportive of preserving Thame's unique position as a market town in the south of England.

"I would suggest that any new MP selected to stand for this seat must be an individual who is prepared to love and support this area. Of course Boris lives just outside Thame and some of these MPs never move to their constituencies and the replacement for Boris will have very large boots to fill.