It sounds like a petrol plug-in hybrid might suit your needs. They can be charged and used like an EV for your day-to-day driving while having the ability to tow a caravan further afield. How about a used Volvo XC60 T8? It's a very desirable premium SUV with plenty of grunt for towing. It has an official towing capacity of up to 2100kg so should comfortably tow your caravan. An Audi Q5 TFSI e is worth a look, too.