I use Cif on the leather seats, clean off with clean water and the apply Gliptone conditioner. Comes up a treat.
The seats are after all a painted surface.

Whilst coated leather is used pretty much across the board in American and Asian cars the leather in the Range Rover and most European cars is naked leather which has bean tanned but not coated , if you want to test this pore some water on the leather and you will see it soak in, on coated leather it just pools and stays there . Cif although an excellent domestic cleaner will leave deposits in the leather grain stick to proper leather cleaners and conditioners and for really stubborn stains I find the Magic Sponge ( melamine foam ) very good 2008 MY Supercharged
Rimini Red / Jet
four zone climate
remote park heater
and no ugly kid windows.
magnus satis quod turpis satis