A perfectly preserved slice of Queen Elizabeth and Prince Philip's wedding cake from 1947 is going up for auction. 

The no longer edible fruit cake is a historic reminder of the monarch's marriage to Prince Philip after Queen Elizabeth II marked her Platinum Jubilee last weekend.

The slice is one of the 2,000 pieces that was given to guests at Buckingham Palace after the wedding ceremony at Westminster Abbey on November 20, 1947.

It is being auctioned with a guide price of £200-£400 next month in Cambridgeshire. 

Herald Series: Queen Elizabeth's 1947 wedding cake could be yours as it goes on sale (SWNS)Queen Elizabeth's 1947 wedding cake could be yours as it goes on sale (SWNS)

Standing at nine-foot-tall, the wedding cake included dried fruit from Australia and was preserved with rum and brandy from South Africa.

It was created by Fredrick Schur, chief confectioner at McVitie and Price Ltd.

This slice was given to the Queen's caterer Sir Norman Joseph, who organised catering for around 100 Royal Garden parties at Buckingham Palace for over 25 years.

Sir Norman was made Knight Commander of the Royal Victorian Order in 1969 in recognition of his services to the royal household.

The cake comes in an original presentation box, marked with the wedding date, and is wrapped in cellophane.

Auction house Cheffins, which is selling the cake slice on July 14, has warned the fruit cake is no longer edible.