Obviously not using your mirrors or you'd have seen him coming and could:
a) Let him in
b) Stopped him getting in
Either way it could be forgotten in seconds
A photo and a line of text is no evidence of what this chap may or may not have done. Where is your evidence? Are we just supposed to take your word?
Waste of time and effort.
Idiot sped up to prevent us from moving lanes to access the slip road to leave the M1 then proceeded to swerve to the right and and run us out of the lane we were in. He then undertook us to get in front of us. What an absolute idiot and should have his licence revoked. I will be transferring the photos I took to my laptop to try make out the name and telephone number on the side of his wagon or whatever the hell it was. Very very dangerous on such a fast moving busy motorway.
this man is actually a good driver