The Back To Black singer was found at the property by emergency services at 3.54pm this afternoon, According to sources, and her death is being treated as 'unexplained' by police.
In a statement, the Metropolitan Police said: 'Police were called by London Ambulance Service to an address in Camden Square NW1 shortly before 16.05hrs today, Saturday 23 July, following reports of a woman found deceased.
Winehouse entered treatment in late 2007 for drug problems, including admitted heroin use.
Earlier in the day, Tim Gatt, a Sky News producer, tweeted a statement saying that she was withdrawing from all of her upcoming performances, writing, "Amy Winehouse is withdrawing from all scheduled performances. Everyone involved wishes to do everything they can to help her return to her best and she will be given as long as it takes for this to happen."
Winehouse has had previous near-death experiences, including one her ex-husband, Blake Fielder-Civil, described in detail back in 2009.