Two people are being questioned about the kidnapping of a British photographer in Syria.
The man and woman were arrested at Heathrow Airport. Scotland Yard is investigating whether one of those arrested is an NHS doctor.
Ronke Phillips discussed the latest developments with Nina Hossain.
More top news
A police officer who spent six days crawling the London Marathon in a gorilla costume has finally completed the 26-mile route.
The victim of a "violent and sustained attack" on the top deck of a London bus has been named as Archie Sheppard.
Transport for London has made the badges and accompanying cards permanently available after a successful trial in autumn last year.