they can try and force trucks off the road but it will have an unwanted effect on everything we buy and consume. at this time there is no credible alternative to the diesel truck, because the amount of batteries required would seriously derate the truck's payload, as would using hydrogen, which requires ten times the volume of space to get the same amount of energy than from a tank of diesel fuel.
this will persist while 95% of everything in the UK continues to travel buy truck.
Diesel is used in trucks because Diesel engines produce much more torque (power from a given revolution of the engine) than petrol.
Major manufacturers are still manufacturing & selling diesel cars, so, no, they’re not being ‘forced’ off the road. Yet.