Help cleaning up a tatty cream interior.

[Mentat]

Just bought this '97 B5 and while the interior is in good nick it's in need of a very thorough cleaning. The carpets are heavily stained and the cream plastics have many scores around them from shoes and generally every day use.



I'd like to clean and treat the leather, get the carpets as close to perfect as possible and clear up the scores on the trim.

I'm going to make a trip to Halfords to get a few products to bring the interior life back to her at the weekend, can anyone advise me what things I need to be getting? Products, brushes, everything... I'm starting from a blank slate here.

Thanks!