There’s a company in the UK called Rugged Guide. As far as I can tell, they’re jack-of-all-trades overlanders. They sell ex-military Land Rovers, the have some some instructional DVDs and they recommend and sell gear. I found them through YouTube — they also make videos.
Here’s a video they posted this summer about a trip to Tunisia. There’s some good sand driving footage and it’s always nice to see people getting out for an adventure.