It's over 40 years since Britain's last Royal Silver Jubilee and already preparations for the 1977 celebrations are under way. Today John, Peter and Lesley will be announcing details of a special competition for designing a commemorative picture and the best of all the designs will be picked for the Radio Times souvenir cover. As silver jubilees are so rare, one day this painting might become a collectors' item, so don't miss your chance to enter and win a prize.