General engine health check?

Am looking to have a bit of a health/power check after my cambelt and dephaser are replaced to make sure everything is as it should be, looking for somewhere that knows the car inside out (197) and has the facilities to do a couple of power runs and identify/fix any issues that may arise. Am based in Gloucestershire, don't mind travelling a bit but not too bloody far!

Any recommendations?
 
Well tdf are based in kimbolton, cambridge. Which is 3 hours from gloucestershire.