There's only one guy/place in the UK to go to, period!
Contact Colin Martin at http://www.solutions4feet.com

Alignment guru Andi McCann (http://www.mccannix.com) works closely with Colin so when booking a fitting with Colin remember to ask him about Andi's work. 

When visiting Colin & Andi don't forget to take your skis with you as they can check your boot's forward lean when combined with your binding's delta angle as one or both may benefit from being altered.