cafe with baby/toddler play area in london

[Catchup]

Hi
I'm going down to London for a few days and am wondering whether anybody has recommendations for cafes and places to hang out with an 8 month old girl. She has started to crawl and is not going to be happy if I hold her on my lap in cafes all day long. Are there any places with a little play area where little ones can crawl around and play?
If anybody is coming up to Glasgow, there are a
few great places like that - kids play, great coffee... I'll be happy to tell you all about them!
Big Thank you from bonny Scotland!
K

Where abouts in london? Central?

We'll start out round Euston station... staying in swiss cottage. But central is the main area we're looking for.

There is a restaurant with a play area in Selfriges, Oxford street - the restaurant on the 4th floor.