Mechanic Recommendation - Suspension - Devon/Cornwall

[Sullamon]

I'm looking to upgrade my suspension, so I'm looking for a mechanic for the job, ideally on the Devon/Cornwall border (near-ish to Plymouth). Our usual mechanic won't do anything that is non-OEM, and the only other that is coming up as an approved supplier has a few suspect pieces of feedback so I'm just seeking out all options.

Any recommendations appreciated.

Thanks