I've got this really good dry cleaning spray that sorts out all the greasy food stains on my sofa that i keep meaning to check out, spray on vacuum off.
The seat/interior spray foam from Halfords works if you are patient applying it and using a brush before wiping off. Silver grey seatbelts - not the best bit of design really.
My seatbelt managed to get wrapped round the catch on the bodyworkk yesterday & as I tried to shut the door it got covered in thick black grease
Just hope my detailing pal can get rid when it's due detail over Xmas,