James Arthur lost his keys after partying with Caroline Flack.

The 'Impossible' singer and the 'Xtra Factor' host - who he was rumoured to be dating during his time on the show last year - sparked rumours their romance might be back on when they were spotted out together at Groucho club in Soho, London last night (24.01.13).

In an attempt to lose the paparazzi when leaving the venue, where the pair enjoyed the luxuries of the VIP area, James crept out the back door of the club before popping into a corner shop to pick up some cigarettes.

However, the 24-year-old pop star couldn't hide from the photographers when he was snapped rummaging around for his keys when he got back to his central flat, realising he has lost them during his night out.

James patiently waited 20 minutes before police officers came to his rescue and gained entry to the building.

It was only last year James was linked to former 'Made In Chelsea' beauty Kimberley Garner after the pair openly flirted via Twitter.

They were spotted holding hands when out on a date in Mayfair in December, where James treated her to a slap up meal at Hakkasan restaurant.

But James did previously express interest in taking things further with Caroline, 33, when he said: ''I think Caroline Flack is beautiful. Maybe we'll see in the future. Things like this have to develop.''