I’ve only just spotted this from a couple of months ago:
In a statement to parliament, the roads minister, Mike Penning, announced that the government is considering allowing the length of articulated lorries to increase by 2.05 metres, to a new maximum total length of 18.75m.
At that length, HGVs would be longer than bendy buses
And, as you might expect, this will be good for the environment.
The Freight Transport Association (FTA) welcomed the proposals, also arguing that longer vehicles will equate to fewer journeys. Andy Mair, FTA's head of engineering policy, said: "Increasing the length of semi-trailers makes business sense and environmental sense, as it will improve logistics efficiency and reduce carbon dioxide emissions from the freight industry."