The Postal Museum and Mail Rail

Kids sort pretend mail, run their own post office and take the slide down. Made for the age that loves playing grown-up jobs.

Sandwiches, cake and ice cream inside a fenced park grown-ups can only enter with a kid, next to the sandpits and climbing frames.

Big sandpits to dig in and a newer Junior Play Zone, so the youngest get their own corner while bigger kids climb.

Aldwych hotel with an 18m indoor pool cleaned with minerals, baby bath, bottle warmer and steriliser, and cots and extra beds.

A playzone of little trains, boats and a cable car your kid gets to drive, made for under-fives.

Bombay cafe in Covent Garden with an all-day kids' menu of smaller dishes with very little spice.