As Stew has said, if you have oxidisation, you will need a polish with some cut - so Dodo Lime Prime over Lime Prime Lite which has no abrasives. As suggested, if you want to stick to all Halfords kit, then Megs Clay, Super Resin Polish and Extra Gloss Protection are a good start. Mind Dodo clay, born slippy, Lime Prime and wax of your choise arent much more expensive, last longer and give a better finish over all. Just depends on if you want to go out now and buy the bits or are happy to wait for delivery. I use i4detailing, Matt is great and has super fast delivery - you'll likely get it all tomorrow if you order it before lunch!