The conmen gained the trust of the elderly couple by offering condolences for their daughter and son-in-law. They had photograpahs in the room of both of them.
There were also photos of Harold's mum receiving a telegram from the Queen on her 100th birthday and a picture of the ship he served on during the Second World War - a mine sweeper that took part on D-Day.
The conmen then started doing a bit of work on the wall and said there was a problem with a bush near the house; the roots were affecting the foundations and urgently needed to be removed. They then insisted on being paid £3000 in cash.
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To some, it seemed like really poor taste. But to other hungry customers it seemed like a good way of spending £50.
A London flat which was home to George Harrison and Ringo Starr in the 1960s has been put on the market for £2.5 million.
An Old Bailey jury also heard today how the 15-year-old initially told police that he was showing the girl the gun when it went off.