Small block Chevy tuning in Teesside/North East

[Monkfish]

As above really, does anybody have any recommendations for someone able to tune and setup the 350 Chevy that's in my pickup? Was apparently 'detuned' for road use and MPG, which seems to have involved messing with the cam timing... No nowt about these engines so would appreciate being pointed in the direction of a capable company.

Thanks!