Sounds like you are trying to make a 'cut up' manoeuvre sound reasonable. Also contravene 162, 163, 164, 167 & 168 of the Highway Code. Back to driving school?
They just don't get it yet do they? So many of us now have dash cams and they will finish up on here and maybe the cops will take an interest, lets hope its not because someone got injured though.
This driver undertook me at over 120mph. Very dangerous!