You can include your email address in a private message to Graeme.Moderators, if it is possible, would you mind passing on my e-mail address to Graeme so that I can have a conversation with him to see if I can be of any help with regard to his current situation.
Unfortunately the locals want the door on the other sideUnfortunately most people would be reluctant to travel to a foreign destination if they are allowed entry due to Covid19 and then on their return to quarantine for 2 weeks afterwards. Plus you have the insurance aspect.
Sad to say, but you may be better off selling the caravan in Spain as there will probably be plenty of buyers. Not sure about car though.
Sorry I cannot be more helpful and wish you all the best.p
There is a company called Oxford Breakdown Recovery that advertise recovery from Europe,using flatbed truck for car and towing caravan,contact number 447863281324,I haven o experience of them other than what they claim on line, might be worth googling them and see whether they can help,hope you get it sorted soon.