I lived in London for a few years, not from UK. I knew the idea behind Naan and how it's consumed. Didn't have it much. A fair few times.
Chicken Tikka is everywhere in UK!
It's like a Flatbread variation iirc? One Indian chic invited us to her house in London and they had cooked Naan, Kebab, Tandoori Chicken Roast, and The Biryani Dish. Loved the last 2.