Demountable camper group

Hi all, new user here. Got a double cab Nissan Navara np300 already. I'd like a demountable for it ... But I don't have much cash, and wife won't let me spend mega money on our first one!

Long shot but if there's anything out there max £6ish thousand please get in touch! Must be structurally sound, don't mind if interior needs a little work...

Really want a working shower and toilet

Keep watching Facebook marketplace and ebay
probably a Northstar or a UK made Ranger,
Quite likely you'll have seen Apollo come up in your range but will almost certainly have leaked,
to make them useable requires to significant structural repair

Scan through buyers guides contributed too by members purchase experience

Thank you for your advice! Yes been keeping an eye out but not many available ATM!