I agree with Cubes, My car will be re tuned thru Shaun soon as well as anything else i need. The only other place i would recomend is Graham West, they have level heads on them, and always talk about SAFE tunes NOT MAX, but with a higher price tag than Boostworx....you do the math!
Also know of a old mates RX7 that blew up on the OLD RPM dyno back in the day, almost seems fitting that he(tim) is now at Tilbrooks......COUGH COUGH