On the recommendation of Greeners from DMR, I had a chap from Autodent Care work his magic on the car.
I had five dents - three typical supermarket dings, one crease in the drivers door from when I pressed it too hard against the wall, and the roof ding from the garage door landing on the roof. The latter was a PITA because it was right on the leading edge of the roof where the windscreen meets it. A few people said it couldn't be done without removing the windscreen.
Thomas worked his magic and took them all out, including the roof, with his instruments. Completely amazed at the work - he certainly took his time on them all but it meant an amazing result.
The car will now be ready for polishing!
Chap I used:
Thomas Murphy
autodentcare.co.uk
No idea if franchise or not. This guy covers Birmingham.
Charged me for the price of four panels. He will charge you nothing extra for more dents in the same panel.