Yes, unless you reclassify it you are restricted to 60 on dual carriageways and 50 on single carriageways. I'd had campers for about 20 years before I discovered this and assumed the speed limit was the same as for a car, and always drove up to the car speed limits, and never got pulled or zapped. It was a bit of a shock to discover that I may have been breaking speed limits all that time. However when I looked at the vehicle reg. documents on my current van I discovered the Converter had recassified it before my purchase - so good on them.