"Southsides" in Clapham in the mid 90's used to have a chinese buffett to go along with its 15,00 "all you can drink" offer on Fri and Sat nights. Class affair. Never went myself as the fact the nickname for the place was "suicides" due to the consumption.

Ritzy in Kingston had an actual "restaurant" area with option for beef burgers, hot dogs and chips etc....