This is my first post, and as I haven't seen much online about sleeping systems in the Discovery I thought I'd share my build. It's pretty basic, but the box in the boot has two compartments with storage crates inside. Opened up, it has supporting arms to let you use it as a table / work area. Fold the back seats down, and a platform concertinas out over the seats and gets hooked to the driver & passenger seat headrests to keep it supported. I got some 25mm EVA foam offcuts to make a mattress, which also folds for better storage.
I'm tempted to put a drawer that pulls out to form a kitchen bench, to replace the table hanging from the boot door, but still looking for a good solution - those heavy duty drawer slides are EXPENSIVE! At some point I'll paint it / varnish it too, but right now this cost about £70 all in!
The bed is 180cm long, and I'm 6'3", but my partner and I get a good nights sleep in there - I just sleep at a bit of a diagonal!
Next job is a diy foxwing awning for the tailgate.
Anyway, hope it's useful to someone!
Image 1 - the sleeping platform packed away. The mattress is seen here in blue upholstery.
View attachment 388508
Image 2 - the bed platform setup.
View attachment 388509
Image 3 - the storage system underneath with fold-up table.
View attachment 388510