THE battle for the Conservative leadership has been dramatically transformed after Boris Johnson announced that he will not stand in the race to succeed David Cameron.

The former London mayor's decision not to join the battle leaves Home Secretary Theresa May as hot favourite to be the next Prime Minister.

It came after the shock announcement by fellow Brexit campaigner Michael Gove - who had widely been expected to be Mr Johnson's running mate - that he was putting himself forward for the leadership.

Work and Pensions Secretary Stephen Crabb, energy minister Andrea Leadsom and former defence secretary Liam Fox.

Meon Valley MP George Hollingbery, who lives in Alresford, has this afternoon announced he will back Ms May.

In a dramatic press conference just moments before the deadline for nominations passed, Mr Johnson said that the next Tory leader would have to unify his party and ensure that Britain stood tall in the world.

And he said: "Having consulted colleagues and in view of the circumstances in Parliament, I have concluded that person cannot be me."

Fareham MP Suella Fernandes, who backed Boris's candidacy, deleted her tweet of support and has yet to announce her new choice.

No other Hampshire MP has publicly backed a candidate yet besides Portsmouth's Penny Mordaunt, who is supporting energy minister and Brexiter Andrea Leadsom.

Mr Johnson's withdrawal from the fight before battle had been joined came after Justice Secretary Mr Gove - who campaigned alongside Mr Johnson for Leave in the EU referendum - said the former London mayor "cannot provide the leadership or build the team for the task ahead".

In a bombshell announcement released just hours before Mr Johnson was due to formally launch his leadership bid, Mr Gove said he had "reluctantly" concluded that he could not support the ex-London mayor.

"I have repeatedly said that I do not want to be prime minister. That has always been my view. But events since last Thursday have weighed heavily with me," he said.

"I respect and admire all the candidates running for the leadership. In particular, I wanted to help build a team behind Boris Johnson so that a politician who argued for leaving the European Union could lead us to a better future.

"But I have come, reluctantly, to the conclusion that Boris cannot provide the leadership or build the team for the task ahead. I have, therefore, decided to put my name forward for the leadership."

Mr Johnson made supporters and journalists wait until the end of his speech before revealing his intentions, just moments before the official announcement from the Tories 1922 Committee that there would be five candidates in the contest - Mr Gove, Mrs May, Work and Pensions Secretary Stephen Crabb, former defence secretary Liam Fox and pro-Brexit energy minister Andrea Leadsom.

Britain had a chance "to think globally again, to lift our eyes to the horizon, to bring our uniquely British voice and values, powerful, humane, progressive, to the great global forums without being elbowed aside by a supranational body" and the agenda for the next PM would be to "seize this chance and make this our moment to stand tall in the world", said Mr Johnson.

But he added: "I must tell you, my friends, you who have waited faithfully for the punchline of this speech, that having consulted colleagues, and in view of the circumstances in Parliament, I have concluded that person cannot be me.

"My role will be to give every possible support to the next Conservative administration, make sure we properly fulfil the mandate of the people that was delivered at the referendum and to champion the agenda I believe in."

Meanwhile, Mrs May launched her bid for Number 10 with a message that the country needed "strong leadership" at a time of economic and political uncertainty and - in a clear swipe at Mr Johnson - warned that politics was not a "game". Contrasting herself with those who enter politics out of "ideological fervour" or "ambition or glory", she said she was a "public service" politician who was not "showy" but could "get the job done".

"If you are from an ordinary working class family, life is just much harder than many people in politics realise," she said.

"Frankly, not everybody in Westminster understands what it's like to live like this and some need to be told that it isn't a game. It's a serious business that has real consequences for people's lives."

Mrs May - who was a low-key supporter of Remain during the referendum - made clear she will not attempt to back away from last week's vote to leave the EU, saying: "Brexit means Brexit."

In a further olive branch to Leave supporters, she said she would create a new Government department, headed by a Cabinet-level minister who had campaigned for Leave, to oversee the UK's departure from the EU.

Mr Hollingbery said: “I will be supporting Theresa May in her candidacy to become leader of the party. I worked closely with her in the last Parliament as her Parliamentary Private Secretary at the Home Office and, in that time, I got to know a fantastic leader with a superb eye for detail who is able to make tough decisions for the good of the country.

“There is no doubt in my mind she is the most credible and experienced politician who can quickly unify the party and take the country forward as Prime Minister during the challenging months ahead.

“We need an experienced captain right now with gravitas and with all the skills to offer the best leadership when we sit down and negotiate with our European friends on the details of our leaving the EU. I believe Theresa has all those skills.”