Are there any Sanmarinese in London?

I'm hoping that my next football with the foreign fans match will be San Marino playing Northern Ireland, on Sunday. But the question is - where are the Sanmarinese?

I know there's at least one - he or she has set up a greasy spoon in Brixton. But the man working there wasn't from San Marino, and didn't know where I'd find them.

Today, I went to the London address of the San Marino Consulate General - but it turned out to be the bloke's apartment. (In Chelsea too, which is fancy.)

My one remaining option is someone called Walter - the chaps on the World in One City blog found him running a cafe near Oxford Street, so I'm hoping he'll be supporting his nation.

EDIT: Walter's cafe was not there, and this match wasn't even on. I can't read a calendar, it seems.