i get a good shine from mine by rinseing down the body with a jet wash then wash useing 2 bucket method (1 bucket of product and 1 of normal water) then dry useing drying towl then polish useing auto glym super resin polish and then seal useing chemical guys and that lasts a long time tbh and makes washing easyer.
also depending on the state of your paint you may need to book it in to get it done by a pro
also g3 do some good compounds i use there paint work detox when i wash my car also used the rubing compound on a few marks on my corsa so it works well
Or just machine polish the car using g3 if not metallic or 3m finisher if it is, then a good polish by hand such as autoglym super resin, and save a few hundered quid by spending about 80? Even if u had to buy a polisher!
I've just done this to mine.. It was originally red but when I got it the paint had faded to a kind of pinky shade lol.
What I did was wash it down with a jet hose (a thorough wash will do using no household detergents). I then used a product called T-Cut which basically removes the top layer of paint restoring it to it's original shine of red.
Then using a coloured wax to finish it of.
I've still got half the car to do so I'll take some piccys of the half I haven't done and the total finished thing once I'm done to show.
This is true.. I've also got a product of the same description called MeanMachine.. I haven't used it yet from the description on the tube it does a lot more than T-Cut as it also removes tar and ground in dirt etc. etc.