Hmmm, your budget won’t get you much of an XC60 so I’d knock that on the head. Also, well you’d probably need the D5 AWD which seem sadly expensive and full of miles.. if miles don’t bother you just look for a decent service history. I’ll say my D4 SELux is a lovely thing, it is, but getting one for under £11k will be tough.
I had a R-design D5 XC90, it was huge, the torque was great for chugging along but the interior wasn’t holding up well after my 3 years ownership. The parcel cover brackets broke about 10 times, £20 a set, the carpet got terribly dirty and hard to clean, the brakes started to fade at 60k leading to new discs and pads on the front, the steering wheel became grubby and the leather started to slip around the wheel itself. It was a tall car, I had to hoik onto the passenger sill with one hand whilst holding a board to get it on the roof, which was a,pain in wind.
Other than that it drank fuel, best 46, worst 28 and aves in the 30’s was the norm and I drive like a grandad. But it will go on forever if serviced properly, you should be able to find a high miler for your budget. Service history a must.
Have you thought about a V70? Plenty of big engined towable high milers for your budget.
What about Nissan XTrails ? They seem popular for towing caravans.