Are there any canteens in EY buildings? If yes, how expensive are the meals roughly?

Yes, in the More London Place office in London Bridge, there is a canteen that serves breakfast and lunch. You can get a full hot meal for under £7 for lunch and the breakfast is cheap (priced per item). I usually have a bagel with butter / jam and it costs around £1.20.

In the Bristol office, there isn't a canteen but there is a breakout space / kitchen with microwaves and fridges for you to use. Every office has a coffee machine and the coffee is really good!

What about in the Canary Wharf office?

Yes there is a canteen the same as MLP there

great views as its on the 19th floor