bit of an update of ideas..........
@Wanda has suggested Flannelette doona cover
@Capt. Gadget has suggested Aircell insulation
@Crusty181 (Mr Kinkmonster) suggested wrapping SWMBO in bubble wrap
(to do WHAT I have no idea.....(well I do, but dont have a TV in the Van to watch at the same time).........................

)
he also suggested a diesel heater - although in Wait Awhile I dont know why...........
@twscoot suggested those sun shades for the windscreen cut to fit
@Bluey also suggested the Dog - (not allowed on the bed)
or cuddling - (been married to long for that Bluey...........

)
or an electric blanket - not keen on one of those
or one of those camping mat / mattress cut to size
@Mustang also suggested a Yoga mat (whats Yoga - Yoda's brother? crazy must be to do....)
@Gibson suggested going north - but we have been doing that for the last 20 odd years - I wanna go south for a change
@cruza driver suggested a single electric blanket for SWMBO side............
if I have missed any "plausible" suggestions, sorry, let me know so I can update
currently we have already fitted and in use..........
privacy screen (black mesh one) - stays on, so I use it
Jayco bed end covers - get fitted on once we park and start to set up
egg shell mattress thingy
mattress protector / cover
Flannelette sheets
thick flannelette blanket from top of bed frame to mattress