Plan D could be for you to come up with a Ka-full of your stuff, and SKS to arrive armed with at least a gazebo.
i had been planni g to go on the bike, but if things get desperate i could ask around about gazebos (gazebi?) and chuck it in the back of the MPV.
Much as I'd like to help, Liverpool-Belper via Dartford is a bit too much of a detour, though