Neil, I get all my cleaning supplies from here.
https://www.autobritedirect.co.uk/
The interior cleaner I use gives a shine not a matt unfortunately.
Shampoo and foam are both very good
Collins Cp2 map. Ramair induction. Mountune mud flaps. Scorpion Sports Cat. Scorpion Tracker. Wind deflectors. NB washer jets and shark fin aerial. EBC Grooved discs, YellowStuff pads. Airtec Intercooler, Miltek cat back with titanium tips. Collins quickshift. DSC Controller