The brake on the rear, right side brake is not working on my 52 reg ST170 - looks like the pads are not compressing to the disc at all.

I would suspect the caliper piston is either jammed or other reasons.

What is the best way to get this fixed? I would take it to a garage but I would suspect they'd charge me for a whole new caliper when a DIY fix would get it to work and cheaply.

But then I do not have the skills (and tools) to do this plus I daren't touch the brake system as it's the only thing that is stopping the car! So would need a local garage (Norwich/South Norfolk) who knows what they are doing - anyone know of one?

Thanks all.