What if the speed limit on NIP/summons is wrong?

[GreigM]

As a bit of a follow-on to my friend who got pulled the other night - he now realises that the BiB said they were prosecuting for 93 in a 50 zone, but in fact the road in question is a 60 limit all the way.

So, he's now holding out hope that he can get off on a technicality when the summons comes through if it says 93 in a 50, when the limit was in fact 60. What are the chances? I did point out to him that he was still over ANY limit in the UK, but it is interesting all the same.

[cen]

I should forget the technicality on this one. He is still facing a likely ban. I wouls suggest his defence should be in the mitigation. For example, Showing considered remorse for his stupidity and that he requires a vehicle for work otherwise he will face seveer hardship etc