Due to the speed being double the legal speed limit and in a 30 zone then this is what constitutes the dangerous driving charge, and as has been said before 1 years ban and a fine and a resit. Very unlikely that he will get it reduced even if he pleads guilty, maybe fine will be less but sentence is minimum 1 year.
Been there done it, won't be doing it again!
Letter from work never worked either, judge was a right harsh pr%ck.
Good luck.
Coulster