personally don't rate Autoglym RSP, too much hard work to take it off and leaves TONS of white residue.
Used to use it, but since I switched to Meg's NXT (basically all their range minus the spray wax which is crap, tried that one too) I still have to find something better for the price.
Don't get the lambswool mitt or if you do, wash it by hand and not in the washing machine as mine got damages, and now use the microfibre mitt from Meg's.
Shampoo: again the NXT one is very good imo.
I use some Autoglym products (the glass cleaner is really good) but now mostly Megs