Took my car down to Wheels In Motion to get the wheel alignment checked. Hugely, hugely impressed, from the moment I arrived. Not many places would let you get under the car at all - never mind get their customer involved in adjusting the toe angles...
Tony talked me through every aspect of the setup, the effect it has, and how it's adjusted - most only needed a little tweak, but he ended up taking over 1 degree of camber off each front wheel.
With the car up in the air, Tony showed me the effect it was having, scrubbing the inside edges of the front tyres.
I'd always been impressed with how the Omega handled for a 1600kg anyway - but with it set up, it's like driving a whole new car. Highspeed stability, and braking, are both far far better - and it goes exactly where you want, instantly upon turning the wheel; previously, it took a moment, which I'd put purely down to the sheer weight of the car...
Well worth a 500 mile round trip.