06/08/2013 06:33 BST | Updated 06/08/2013 06:53 BST

Boris Johnson On Post-2016 Job Plans: 'Something Will Crop Up'

British Prime Minister David Cameron (R) chats with the Mayor of London, Boris Johnson at Battersea Power Station in central London on July 4, 2013. Battersea Power Station, which was decommissioned in 1983 and stood vacant ever since, has been purchased by a consortium of Malaysian companies with a plan to convert the structure into hundreds of apartments, offices, shops and a theatre. AFP PHOTO/POOL/OLI SCRAFF (Photo credit should read OLI SCARFF/AFP/Getty Images)

What will Boris Johnson do after 2016 if he keeps his promise to not seek a third term in City Hall and is unable to challenge for the leadership of the Conservative Party? The mayor said on Tuesday morning: "something will crop up."

It has frequently been suggested that Boris planned to stand for election to the Commons before 2015 - in order to be in place to challenge for the leadership of the Conservative Party in the event David Cameron fails to win a majority at the general election.

However last week The Spectator reported that the ambitious Tory had decided against the plan. The magazine said that having come to believe the prime minister was on course to secure a majority, Boris did not fancy having to serve in the cabinet under Cameron. The suggestion being that for Boris, it is all or nothing.

Speaking on LBC Radio this morning, Boris said he believed there was a "bigger chance than ever" that there would be an overall Conservative majority after the election.

"It is increasingly likely that David Cameron will be leading a Conservative administration after 2015," he said. Boris added that Cameron appeared "increasingly confident" and was at the "top of his game".

Asked what he would do after 2016 if he was no longer mayor, he said: "something will crop up - I am an eternal optimist."

A recent survey conducted by YouGov revealed Boris was by far the favourite of the Tory grassroots to be the party's next leader.

Of those asked 38% wanted the mayor to succeed Cameron, way ahead of Theresa May who had the support of just 18% and Michael Gove on 13%.