Following his example I bought:
Boyd's Ultra Violet auto shampoo (smelt so nice I might use it myself later!)
Meguiar's clay & Quick Detailer
Meguiar's Ultimate Quick Wax
First I gave the AFT a good clean with hot soapy water & a sponge - including using a toothbrush along the black rubber seal (I think my neighbours must think I'm mad)
Then I went over the roof using the clay and the detailer as lube (as instructed). Very interesting - I hadn't used clay before, you could almost feel the roof getting smoother (and the clay got filthy which was quite satisfying).
Next I cleaned the sunroof & the front piece of glass with Rain-X (in retrospect I should have started with a limescale remover).
Next I waxed the roof using the Maguire's Ultimate Quick Wax and frankly I wan't very impressed. It's a spray and felt pretty thin. So I raided my very old car cleaning kit and came up with a bottle of Armorall Car Wax with carnuba wax. I smeared it on in sections and then buffed it off. Oh what a difference - it went on like handcream and I could almost feel my AFT drinking it in.
Guess what - it's come up all shiny - I am well impressed.
Here is a picture where you can see the dull finish on the left - and the shiny bit (after the Armorall) on the right:
Next job is to put the AFT up, clean around all the rubber seals, wipe the tent down with baby wipes & silicone all the zips.
) and I can't wait to get the potions and lotions onto it 
