They are everywhere in London

Leaving my flat I can go to the Serbians, or the Portuguese, the Italians, the French, the French again or the Poles. All in 100 yards.
If I turn left instead I have a choice of 6 more.

How the feck do they all survive? Every time I go into one I am the only customer.
Are they all a front for summat else, like?
Putney High Street yesterday, well, I lost count.
It's a mystery I tells ya