I also emailed Simon, but will stick them on here as a comparison for others.
This was the Right hand side of the car, really should of measured both sides and took the average
Front wheel centre to sill = 360mm
Front wheel to rear wheel centres = 2142mm (sales material says 2133.6 so 8mm out)
Rear wheel to sill = 330mm
These were taken with a plump bob to a fixed rule, so should be close.
Be interested to see others measurement as I guess setting the caster at the front will make a little difference to the distance.