Cool restaurant London-mastercheffy kids

[bitofabelly]

Hi all,
Looking for a cool restaurant in London that would be child friendly but would give my kids a cool culinary experience. They are master chef addicts, fairly game ball to try new foods. Any recommendations? Would love to bring them somewhere to try food they wouldn't normally get, but wouldn't get the gawk at either. Thanks in advance.

My kids are 12,9 and 7

Sketch
Afternoon tea at one aldwych, it's Ronald Dahl themed with lots of magic bits
To be honest, you will need to pay adult prices for a mastercheffy meal so it could end up being very expensive
Teppanyaki is fun for kids, it not mastercheffy
Kensington roof gardens is nice with kids and they have a kids menu but it's not mastercheffy
I will be interested where you end up, report back!