In days before happy cow and the growth of veggie restaurants, the filmhouse was a staple eatery in edinburgh. About a third of the menu is veggie, aand do offer some vegan options, and if you ask at the bar, they will do as much as possible to help you.
The food is okay, like many others, offering various options from around the world, never fantastic but never poor. Its a nice big space and a good option if you have kids.
Also a great cinema.
Cons: a little expensive, meat