On its 50th birthday, Blue Peter hijacks BBC One for a special, one-off, live, extended edition of the show. Jam-packed with delights for fans, the centrepiece of the 50th birthday show is a unique tea party at Buckingham Palace. Her Majesty The Queen has invited current presenters, key production staff and a selection of the longest-serving presenters from each of the show's five decades to the Palace to celebrate. But, for whatever reason, her Madge forgot to invite Richard Bacon?! Sheer madness, I know.