“But how will his friends get here?” asked little WB when we broke the news that his elder brother would be celebrating his birthday on a campsite in the Languedoc. Gently we explained that Big WB’s friends would not be arriving by helicopter to attend a conventional birthday party with presents and party games, but that it would be a special day nonetheless.

“I feel taller” said Mr Five on the big day: “I think I grew in the night.”

Anyone who celebrates their fifth birthday with a visit to the Lego Museum, followed by a visit to the largest soft play centre in the South of France can’t be doing too badly.