BBC News:- A slice of Prince Charles and Lady Diana Spencer's wedding cake has sold for £1,850 at auction. It was given to Moyra Smith, a member of the Queen Mother's household at Clarence House, who preserved the topping with cling film. The slice is from one of the 23 official wedding cakes and features a sugared onlay of the royal coat-of-arms coloured in gold, red, blue and silver. The cake was bought by Gerry Layton in Leeds who bid online. It was expected to raise just £500 but auctioneers said they were 'amazed' at the interest. Mr Layton, a