Thanks for the comments. All credit for the Saracen painting goes to my wife and friend. I think they both did an amazing job, especially on 15mm figures.
The mat is a 6x4 forest mat from Zuzzy, painted as desert instead. I originally got it for my modern Afghanistan games - ditto for the buildings and scratch-built market stalls. We only use at small part of it for Saga, since we're playing in 15mm and using half measurements.
I think the mat is great, but I don't know if Zuzzy is still in business or not. The last I heard they were accepting orders but not delivering, so do some research and be very careful if you decide to buy from them.