I had gluten-free and dairy-free lunch. Steak sandwich was delicious. The chips are very good. Had a gluten- and dairy free brownie too which was rather dry and crumbly, but a lot of those things alike. All these topped with a soft drink cost me just a few pence over £20.
There are gluten-free, vegan, and gluten&dairy-free desserts available. They're single packed to avoid cross contamination. Very thoughtful.
The waiting time was a bit long, but the place was busy.