Really good gluten free menu, and they appear to be quite good with allergies, intolerances & other dietary requirements generally, for instance they specifically tell you to order it person (rather than via the app) if you have allergies and intolerances, and food comes out with a little flag on to indicate if it's gluten free, vegan etc, which should reduce the chance of mistakes.
The selection of food available was really good, with lots of variety, a choice of traditional British/European foods and interesting foods from around the world, and everything we ordered was very tasty and well presented.
Coffee was decent, not exceptional but good enough for us city folk who've been spoilt by hipster coffee shops!