The local Conservative association has been told to expect as many as 100 applications for one of the safest Tory seats in London.
London's mayor made his announcement at the end of a key speech on Britain's future in Europe.
After declaring the capital has "nothing to fear" from leaving Europe, the Mayor of London is heading for a clash with business leaders.
NBA All Star and former Croydon resident basketball player Luol Deng was in the capital today to launch the Luol Deng Academy, based at the Evelyn Grace Secondary school in Brixton.
Luol, who captained the Team GB squad at the 2012 Olympics and who has just signed for the Miami Heat in the US, was born in South Sudan which his family fled, settling in South London.
The Academy has been set up in reaction to the British government cutting all funding to the game in the UK. Deng wants to give talented young kids a proper path way into the professional game by offering professional training and for some of the most promising kids, scholarships into the US high school system.
In 2013 Luol sent an open letter to David Cameron asking him to reconsider pulling all funding, the letter got a large amount of media coverage but alas funding was completely cut.
Labour's London spokesman and MP for Tooting Sadiq Khan said:
"Boris Johnson's announcement is confirmation of how weak David Cameron is and how out of touch the Tories are.
"When millions of people are struggling under a cost of living crisis, the Tories are turning inwards, jockeying for position in a future leadership contest.
"What Britain needs is a change of direction. For all their squabbles over who leads them, all the Tories offer is more of the same failure."
Mr Johnson has said that if he is elected to the Commons next May he will still serve out his term as Mayor, which ends in 2016.
In his Telegraph newspaper column at the weekend he called for tougher anti-terrorism laws - including a presumption that Britons travelling to Iraq and Syria without notifying UK authorities are engaged in criminal behaviour.
– Boris Johnson
"The law needs a swift and minor change so that there is a “rebuttable presumption” that all those visiting war areas without notifying the authorities have done so for a terrorist purpose."
But Downing Street has poured cold water on the idea, stressing that police and security services are not "pushing" for such measures.
Boris Johnson has applied to be the Conservative candidate for Uxbridge and South Ruislip in the 2015 general election his spokesperson confirmed this afternoon.
Website GetWestLondon says the Mayor of London submitted his name to Conservative Campaign Headquarters this morning, just 48 hours before the deadline.
A committee of five members of the Uxbridge and South Ruislip Conservative Association will whittle the candidates down to three or four on September 5 before announcing their winning candidate on September 12.
Read: Boris Johnson says he will try to get elected as MP
A former police community support officer with the Metropolitan Police is facing a prison sentence after admitting he contacted the Sun to say a supermodel was attending a police station accused of assault.
Paul Randall - who is 49 years old - was told by a judge at the Old Bailey: "This reveals a serious breach of trust and a prison sentence is likely."
Randall, of south west London, admitted one count of misconduct in public office.
He will be sentenced on September 18.
A protester has set up camp on the roof of Justice Secretary Chris Grayling in Ashtead in Surrey. Martin Matthews unrolled a banner saying: “No rights? Go MAD”
Martin Matthews says he has enough supplies to keep him going for five days. Surrey Police say they're monitoring the situation.
A woman who was dubbed the Hackney Heroine for standing up to rioters in 2011 has announced she is stepping down from the race to be Liberal Democrat president over the party's "Neanderthal views on diversity".
Pauline Pearce, 48, posted a video statement on her Facebook campaign page accusing the party of "underhand racism" and claiming senior party figures would not support her because of her criminal record.
She said she would remain in the party but was resigned to remaining "the token person who sits and smiles in the background" rather than being able to take on prominent roles.
The party said it was saddened by the decision and would look into her claims "as a matter of urgency".
London's Tricycle Theatre has backed down on objections to funding for the UK Jewish Film Festival (UKJFF), which saw the venue refuse to host the event.
The theatre announced it could not support the event while the crisis in Gaza was ongoing, as it is sponsored by the Israeli government.
The festival will not go ahead as originally planned in November, but it is hoped it can return next year.
A joint statement from the UKJFF and the theatre admits the decision provoked "considerabe public upset", and said they joined forces to tackle that.
– UKJFF and Tricycle Theatre
Following lengthy discussions, the Tricycle has now withdrawn its objection and invited back the UK Jewish Film Festival on the same terms as in previous years with no restrictions on funding from the Embassy of Israel in London.
The UKJFF and the Tricycle have agreed to work together to rebuild their relationship and although the festival is not able to return in 2014, we hope to begin the process of rebuilding trust and confidence with a view to holding events in the future.
We both profoundly hope that those who take differing views on the events of the last few weeks will follow our lead and come together to acknowledge that dialogue, reconciliation and engagement will resolve points of difference and ensure that cultural diversity thrives in all communities.
Thousands of demonstrators marched along London's streets today to protest at the bombing of Gaza, calling the Israeli offensive a "massacre".
Many of those taking part waved placards and the black, white, green and red flag of Palestine, as they converged on the BBC's Broadcasting House near Oxford Circus this afternoon.
Chants of "Free, Free, Palestine" were shouted across London's busy West End as marchers made their way to Hyde Park for a rally.
Accompanied by a samba band, families, students and others from across Britain marched to call for an immediate halt to the killing in Gaza.