John Lennon was “bubbling over” with excitement about returning to the UK in a phone call the night before he was shot dead, a newly released letter written by his aunt has revealed.The former Beatle was killed by Mark Chapman outside the entrance to his Manhattan flat on December 8, 1980.A month later his aunt Mimi Smith replied in a letter to Daily Express journalist Judith Simons, who had written a letter of condolence following Lennon’s death.“Dear Judith, Thank you for your letter, kind