How can I trace an old business?

[grumps]

Hi

My grandad worked for a firm/shop/company called W.R.Turner in St. Georges rd. Regents park, London, around 1912. There is no st. georges rd near regents park now. Does anyone know how I can find out where this road may have been and also how I go about finding his old employer?

Many thanks
Graham

[grumps]

Hi Chris

Thanks very much for your help, you are dead right. grandad was a butcher and the address was no. 38 so that's definately the place. Those web addresses are also very helpful.
Once again thanks very much

cheers Graham