Magistrate here.
I am pretty sure that is well above the level that the police will offer him a speed awareness course.
Presuming it goes to court, please be aware that even if we wanted to it is not within our power to offer a speed awareness course. That is a police only before prosecuting opportunity for those who only go a certain amount above the limit.
Ok, so money first. A band C fine is equivalent to 1.5 weeks income, this will get reduced by 1/3 if he pleads guilty at the first opportunity. So that takes it to one week income. He will have to fill in a means form with details of his income for this to be calculated. He will be asked to make a Best honest estimate if it is not a fixed amount. Just be aware that the form is a legal document and to lie on it is perjury.
As for disqualification, at 76 in a 50 the standard penalty is 7-56 day disqualification (or 6 points). The (or 6 points) but is very rarely used for extenuating situations only (genuine emergency, was clearing the road for an emergency vehicle etc). I would guess he is likely to receive a 7-21 day ban, probably 14 days but depends on who you get and what details the prosecutor gives to be honest.
I wouldn’t bother making excuses, at the end of the day it was 76 in a 50, he admits he did it. I would go, apologise and be contrite.
A 2-3 week ban is unlikely to lose him his job. He is self-employed so can probably work around it, get a taxi or public transport or have a ‘holiday’. It is designed to be inconvenient for a reason.
Personally I am not sure a lawyer will be worth the money. To be honest we can tell when a lawyer is spinning a yarn and where the case is pretty simple such as this you may not get your money’s worth. Sometimes it is better to hear it from the person than a smarmy lawyer. Without a lawyer he will be offered ample opportunity to say that he felt under pressure from the van, realises he shouldn’t have done it, has never been done for speeding before and is self-employed so the ban will be difficult for him. Explain the situation but don’t make excuses if that makes sense?
I hope that helps.