Thanks. I only ask because I saw a bit of a programme on telly. They were in a diner and there was a waitress walking round with a glass coffee jug filling up any cup she could see. In the UK, if you want more coffee or tea then it's another 3 or 4pounds on the bill.
But in Chinatown in London, they have chinese restaurants, all you can eat buffet for £10 including a tin of Coke, very good value for central London, I always eat there when I'm in the smoke.
Col