You need a break, a complete rest, recharge your batteries.’ Recharge your batteries. What the hell does that mean? Nelson prides himself on not needing batteries. He’s an old-fashioned, wind-up model.

When she bought the cats her mother asked her straight out if they were ‘baby substitutes’. ‘No,’ Ruth had answered, straight-faced. ‘They’re kittens. If I had a baby it would be a cat substitute.