Alfa specialists in Wiltshire area?

Does anyone know of any good Alfa specialists in the Salisbury area?

Are these people any good:
http://www.melburymotorcompany.co.uk/service.html ?

I've just moved up from Devon and was using W Sanders & Son in Holsworthy, who were very good. Have an annoying knocking through steering I need sorting (see thread in 156 technical...)

Thanks!