I recently try to run a similar search and I must say that althought the Midlands are the heart of the Motor Industry, it is not an easy job to find an Alfa Specialist.
I came across the following 2, but never pay them a visit or had any job done.
Would be interested if anyone has an opinion, though.
W A D Auto Developments Ltd
3, Waterside Ind Est Ettingshall Rd
Wolverhampton West Midlands
M6 junction 10
ALFA AUTO SERVICES Tel 0121 766 5215 Servicing , Breaking, .Engine rebuilds Birmingham