thewildcampers
Guest
We took ours to the local Imo car wash, £15 & that included the roof. The guy done a brilliant job so was happy to give him £25 
Has anybody ever asked the local bus garage for a go through the brush wash, we used to put our delivery vans through the local one when it was still in a building type garage, not a parking lot like now. The buses usually are reasonably clean so they must still do it to them.
I'd certainly advise using quality products, this site has plenty with details about each. Car Care Products | Car Detailing Products | Car Cleaning Products. I met someone who had the £2200 tub of wax, which he had won. It did give a nice result!
Muc off caravan cleaner is amazing, even quickly removes black streak.
Muc-Off 707A Caravan Cleaner 5 L: Amazon.co.uk: Car & Motorbike
Don't skimp, specialised products produce the best results.
I'm considering undersealing soon, think that it may be worthwhile long term. Rustmaster and Waxoyl Professional Home Page
Muc-off great stuff. bit cheaper here http://www.amazon.co.uk/Muc-Off-707...e=UTF8&qid=1418555505&sr=1-3&keywords=muc+off