This happens
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Near Lyndhurst in the New Forest.
The White Kia caused the incident but just drove off (after slowing down) knowing they just caused it due to 100% careless Driving 
The Transit behind me was caught unaware and slammed into the back of me...
Thankfully, I had forgotten to remove the towbar and I had nil / zero damage to my car, though my Towbar had managed to punch a hole in his front grill right upto the radiator.
The Kia Driver has been reported to the Police for Under Care and Attention 