I would second Wheels in Motion in Chesham. I had my alignment done there a couple of weeks ago after a dealer tried and failed to fix the
problem - a mis-aligned steering wheel.
The difference in how the car feels is massive. The vist also solved the mystery of the rear camber related tyre wear which I have also suffered and is now solved.
Wheels in Motion identified that the factory suspension settngs on an FR are G63 which are listed as "Cupra". A main dealer had my car realigned to G50-51 sport specification which they said was the official SEAT fix for curing tyre wear. 17000 mile after the reset and I have not suffered from either tyre wear or rumbling tyres.
A point to note the std Bridgestone tyres were terrible, Dunlops SP sport Max or Michelin pilots feel better and are much quieter.
If you have a wonky steering wheel or bad tyre wear then get a four wheel alignment done. It costs about £70 and makes a big difference. Skoda, Audi and VW drivers all suffer on the higher spec versions too !
My car is an FR TDI.