^^^ What he says G101 - which is a multi surface cleaner that eats body fats (wear gloves).
If you pop down your local pound store, you will see a vivid green bottle of some named 'multi surface' cleaner - same stuff, just more dilute! Will do the job though!
You can also use Autoglyms' interior cleaner which works just as good, but wear a face mask cos it is lethal if you breathe it in!
Spray on, and scrub in with a nail brush, wipe of with a HOT damp cloth.