Can't believe how timely this post was. My wife is at a hen's party and I just sent her an image of this and told her to make sure she looked in on the Defender on her way in as I will be draped seductively over the bonnet wearing these!
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This should give you some idea...
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Won't be getting much use this weekend though.. Too warm to be polishing vehicles :)
LMFAO
But seriously, any good quality leather cleaner followed by leather conditioner is the go.
Otherwise call a professional leather cleaner eg www.myleatherdoctor.com.au or your local professional auto detailer.
The almond leather and carpet looks great, but I went dark interior so the marks and stains wouldn't be so much of an issue.