Used to go for lunch (food is fantastic) but recently had to find somewhere else to go. Most people in my company take lunch from 12:00 - 1:00 pm. They turn their ovens/stove on at noon, so there's no chance to get your food (with naan bread) before 12:40-12:45, and that's when we need to actually be starting to head back to work.
Great restaurant, but do yourself a favour and don't go there for lunch.