Is my Mercedes Vito with windows classified as a van or a car?

I have just bought a Mercedes Vito with windows in the sliding doors behind the driving seat and a row of seats. For speed limits, is it classed as a van or a car, and when towing is it commercial, needing...

Are there any differences between a private light goods and a light goods vehicle?

Are there any differences between a private light goods and a light goods vehicle? If a 1997 Escort van is a PLG does it mean it's a commercial vehicle?