Use Texecom a lot mainly Veritas series but have a Premier systems running . Make sure you get the cd and upload/download lead (dongle) when you do the course makes programming the Premier so easy. Their main office is in Haslingdon so if the Bury couse cannot supply nip over the M66 (aprox 8Mls) and ask at the main office I have always found their service and ;tech support to the trade second to none.
CJ