London with a teen recommendations

[Potter10]

Sorry if his been posted a thousand times, I can't find anything in the search that's relevant!
Can anyone recommend somewhere fun to eat in London with an 11 year old. I'm taking my son in a couple of days and wanted something a bit different like a game place or something.
Nothing with fancy food. Just pizza and burgers or anything along that line but with a good atmosphere.
We will be doing the natural history museum, London eye and all the sights on the hop on hop off bus over our 2 days. But, if you have any other recommendations they are all greatly appreciated.
Thank you in advance

[andHelenknowsimmiserablenow]

Vapiano - Italian - by Tower Bridge is lovely, and not too expensive.
Great pizza and pasta.

[Potter10]

Great thanks. We are staying by tower bridge so that's even better!

[Spidey66]

Camden Market. Nice vibe and plenty of places to eat