Amy Winehouse has reportedly been put under 24-hour surveillance by her record label bosses in a bid to keep her away from any dealers and drug-taking pals.

The Rehab star was discharged from a London clinic after collapsing at her home last month. She was subsequently diagnosed with traces of potentially deadly lung disease emphysema.

And, in a desperate attempt to keep her clean of drugs, executives at Island Records have allegedly put her under the vigilant eye of a full-time security guard.

A source told a newspaper: "Effectively, Amy's been put under house arrest. She is being monitored by 24/7 surveillance to make sure she's behaving herself and keeping out of harm's way.

"There is also a security guard stationed outside her house around the clock to vet any undesirables.

"From now on, there'll be no more waifs and strays coming into her place, wreaking havoc."

They added: "Crucially, they don't want known drug dealers coming anywhere near her. Amy has to give them names of people expected.

"Anyone who turns up uninvited will be sent packing. It's for her own good."

Fans will be hoping that this measure will aid the singer's recovery in time for her upcoming slots at V festival and T in the Park.