Leaky Cauldren, real location?

[severusbook4]

No: HPFGUIDX 76570

I know this is strange, but has anyone who is a resident of London, 
gone looking for the physical address of the Leaky Cauldren?  Using 
any information JKR used in the book?  I thought it would be fun to 
know what is actually sitting there.  I did the same thing for Anne 
Rice's books that took place in New Orleans, and it was very 
interesting to be able to truly visualinze the exact location she 
was writting about. Just wondering.

Severus "from evil" Snape