I went through this debate just recently, I ended up buying a new Toyota Hilux... I don't see why Adblu would be a concern, it's £15 for a top up every 10k.
Ford Ranger waas nice but far to many serious electrical and mechanical horror stories. Even the 2.2 goes well, I didn't try the 3.2 but can imagine it's mental.
Izuzu also very nice, I would have maybe gone for one but I needed to buy new to get the basc discount and really really didn't fancy a 1.9tdi which is what the new one comes with. I also heard they break and the warranty is a bit **** despite being 125k or 5 years.
VW... not my cup of tea at all.
Nissan, I didn't consider because of the historical problem of them snapping in half. I'm sure they have fixed it but trust lost.
mitsi l200, we have lots of them at work and they are money outs after 30k and break.
Fiat based on l200, awful.
All that being said the Hilux isn't perfect. I've had new windscreens and I've only done 5k I'm convinced they are a weak point, the new hybrid Toyota suffers weak windscreens and was recalled. The Peking sensors on the rear do not work when it is raining. It has a weird rattle up from which is a known common problem and can be fixed but it's still annoying. The rear pickup leaks awful despite me paying for all the seals etc, annoying for the dogs in winter I'm sure.
Basc discounts on the Toyota was 18% which is pretty incredible. If you claim back Vat as well then your laughing.
Hilux is the best of a bad bunch, engine and 4x4 capabilities are awesome, better than my defender ever was. Comfort is also very good, economy averages 32 to 34 mpg. I've had 39 on a long run and mines an auto. I would go for the auto as then it's a Japanese engine on a jap box. Go for the manual and it's taiwnese manufactured.