Khan, a former Labour frontbencher, promises to roll up his sleeves and 'fight for all Londoners'.
BREAKING: Police receive allegations of fraud during election in seat Nigel Farage failed to win.
BREAKING: The Burundian army announced on radio that it is taking control of the country.
Pentagon urges Iranian ship to change course and head to Djibouti for UN inspection as war of words escalate.
Exclusive: The counter-extremism expert says Cameron's fight against terrorism must be streamlined.
BREAKING: A protester in Bujumbura tells IBTImes UK that police started using live bullets.
IBTimes UK profiles the prime minister's post-election cabinet and ministers.
Australia's conservative government delivered budget proposals on Tuesday (12 May) that were light on radical reform but heavy on pledges to return to surplus.
Ispa say MPs went on last-minute spree to purchase items to reclaim before spending deadline
Ukip will be most effective defeated by exposing its ideas not by sustained a flawed, unjust electoral system.
Chancellor George Osborne says Office for National Statistics figures show Tory plan is working.
Police forces have opened fire on a big crowd of protesters
Bill to stop Britain being 'passively tolerant society' criticised as not dealing with causes of radicalisation.
The likely presidential candidate will instead attend an event in Atlanta.
PM: 'For too long, we have been a passively tolerant society'.
Voted against giving Obama fast-track authority on deal.
Meeting in Russian resort of Sochi made little progress.
Unions say new balloting rules will make legal strikes 'close to impossible'.
Wolfgang Schaüble meets George Osborne in Brussels.
As violence spreads in Burundi, IBTimes UK looks at the man at the centre of the building storm.
Russian authorities still have a long way to go to make 'deoffshorisation' a success. Here's how they can start.
Al-Qaeda in the Indian Subcontinent claims murder of Ananta Bijoy Das.
EXCLUSIVE: Former Hutu militia leader Agathon Rwasa tells IBTimes UK action needed by 13 May.
Prime Minister says they are the party of 'working people' in video of cabinet meeting.
British social attitudes survey suggests voters have some way to go on accepting other races.
Osborne was speaking on arrival at meeting of European finance ministers.
The Conservatives may be back in power but I don't believe they deserved to win their place in government.
Sharif to meet Afghan President Ashraf Ghani during his visit.
Here is my blueprint for Cameron as he seeks to build on amazing election triumph.
The pro-business leader has had one year to make his mark on one of the world's fastest growing economies.