It would appear that DVSA/VOSA have taken on the challenge of “insecure” loads . Wheter this is seen as a problem in haulage or just a money making exercise is up for debate .
I have a soulution - Flat trailers or Boxvans/ fridges .
If it fits in a box or a fridge it ships , if it dosent it goes on a flat - roped and sheeted or strapped and chained. Curtainsiders - at least UK spec ones with no side boards are going to be made a thing of the past . VOSA /DVSA will just keep stopping and fining until companies realise its cheaper in the long run to either replace the curtainsider with a box or a "fancy curtainsider with 3-4 posts down each side with the aliminium boards inbetween and the fold down sides like the old tilts had .
https://www.cargobull.com/files/uk/filemanager_files//Neufahrzeuge/Curtainsider/Film_S_CS_UNIVERSAL_EN_klein_1.mp4