After just talking to someone about my hometown, Sidcup, I realised there's actually not one positive thing I can think of that the place is known for.
Derek Conway, Disgraced Tory MP and utter cock-hinge. Who incredibly is STILL the MP, but now independent.
Desali - or however it was spelt. Sidcup tap water that gave you Cancer or something, marketed by Coca Cola.
Having the hospital with the worst rate of MRSA in the country.
Being on the list of places on those DFS ads
And recently in the news, people getting stabbed.
Having said all that, I still have a fondness for the place. And it's useful now having a house in both North and South London/Kent, for night buses, etc.
Please post about your home towns.