UK van speed limits: all you need to know

Speed limits of the United Kingdom are something that are a bone of contention for many people. Some want to see them reduced, while others think they are too slow, yet others believe they are just right. But what are the speed limits if you drive a van? Unfortunately the answer isn't clear-cut, because it varies according to what type of van, pick-up truck, camper or other commercial vehicle you're driving, the road that you're on and whether you're towing or not. 
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