Christmas presents destined for sick youngsters at Great Ormond Street Hospital have been stolen by thieves.
Up to 20 wrapped gifts were taken from the world-famous children's hospital in London between Friday and Monday, the Metropolitan Police said.
The presents, which had been bought using the hospital's charity fund, included portable DVD players, DVDs, Nintendo DS games consoles, games and toys and were to be given to children in the intensive care unit.
They were taken from a non-public area of the hospital, which has more than 200,000 patient visits each year.
The hospital, known as GOSH, was set up in 1852 and celebrated its 160th anniversary this year. Its valuable work was highlighted during the opening ceremony of the London Olympics, when many of its young patients and staff took part in a sequence paying tribute to the NHS.
Inspector Neal Anderson said: "To steal presents that were supposed to be for children too sick to be at home with their families at Christmas is beyond belief.
"I would urge anyone who has information about the individual, or persons, responsible to contact officers so that we can try and get the items back before Christmas Day. I would also urge the thief to try and think about their actions and do the decent thing and return them."
Officers from Camden borough are investigating the theft. Anyone with information is asked to call police on 101 and ask for the CID office at Holborn, or the charity Crimestoppers on 0800 555 111.
Later, Lord Sugar said his company would pay for new presents for the children. He wrote on Twitter: "Disgusting that xmas presents were stolen from @greatormondstreet kids. Replace them and send me the bill to @stylfile."
Currys and PC World also offered to replace the DVD players and games consoles that were stolen.