Any recommended garage near Suffolk or Birmingham

[galetto]

Couple days ago I bought a 2006 Subaru H6, This is my first car in this country, I live in Suffolk but this week I gonna drive to near Birmingham.

I hear some noise from front of the car between 30-60 m/ph which might be wheel bearings.

Also unburned LPG smell comes from exhaust, probably needs a calibration. So I need a Subaru mechanic and a LPG garage.

Any advice?

BTW maybe strange question for you guys but as a newcomer I have no idea about how works garages. Should I get an appointment via phone before visit?