Right just checked with my complience manager ( i work for a ins co

), and his insurers are talking rubbish, his work mates can be a witness, hes to ask them (the insurers) what regulations they are using to say that the work mates cant be witnessess. Plus normally when you are rear ennded its the driver that hit you from behinds fault.
Any q's pm me and i will try and help as much as poss