The large SUV types with 2.0 litre diesel’s in the 150hp range should be heavy and have lots of torque for towing.
I’d look into the insurance side of things as motability doesn’t cover towing and you need your own personal cover. I remember this been talked about quite a while ago.
Current Car
KIA Sportage GT Line Mhev
Previous Cars
Peugeot 5008 Allure Premium
VW Touran SEL
Citreon C4 Picasso