When the Princess was 4, on Wednesday afternoons I used to haul her to a private pool for very expensive private one-to-one swimming lessons. She looked technically beautiful as she went along – grenouille, avion, flèche – but, crucially, she wasn’t actually able to swim. She resisted lessons after that initial foray. All last summer I thought that she would get the hang of it but she just didn’t. And then, today when I had no hopes of anything but that nobody would drown in the pool, she started to swim. Just like that. I am pleased.