Not sure if you heard on the radio about a vans being stopped on Marlow Bridge a couple of weeks ago. Basically the've put a sign up to say max 3T gvw. Many vans were stopped an ticketed, irrespective of what they actually weighed, if they have a gvw of over 3T, ticket given. We had one of our vans done even though it was near empty and nowhere near 3T - probably 2.3T
If they want to set an actual weight limit, then do so - don't set it on potential weight. so our large transit and relay now need to avoid the bridge, which btw has bollards to restrict width of entry fr larger vehicles.
Driving around today I spotted a couple of more signs elsewhere with the same thing - so beware of your vans gvw. Eg a 2900 vivaro lwb has a gvw of 3010kg - would that be ticketed?