When Charlie Edwards told his mum that one of the signs at the Natural History Museum was wrong, she told him to leave it to the experts. Charlie, who was diagnosed with Asperger’s when he was four, visited the museum’s ‘Dino-Snores’ sleepover with nine-year-old brother Ronnie as a joint surprise birthday present, sleeping inside the museum with mum and dad Jade and Justin Edwards and getting involved in numerous events, including a hunt for dinosaur-themed clues. Mum Jade, 29, said they had been sceptical when Charlie told them the museum was using the wrong picture.