The best restaurant in Bromley, which is also very good by any standard, is Sanxia Renjia. There are several of these sichuan restaurants around London and Jay Rayner reviewed one here (this one also in South London, in Deptford): Sanxia Renjia, London: ‘Enough excitement for a month’ – restaurant review
The dishes are really delicious, and the Bromley staff very friendly.
+1 for the Bromley chapter of Sanxia Renjia, it’s excellent. Slightly further out of the town centre, I’ve also had some really memorable curries in Tamasha. Also the Indian restaurant next door to David Bowie’s childhood home by Sundridge Park station - can’t remember its name.