My wife got done for 41 in a 30 today, but the Police wrote the wrong vehicle registration number on the ticket. Now I'm going with her to 'produce' (like they don't know the vehicle was insured etc. duhhh) on Friday, but is there a defence here? She wasn't driving the vehicle stated in the fixed penalty notice, but she of course gave her correct name and address and agreed to the FPN rather than a court appearance. I the FPN shows an incorrect registration, is that cause for having the desk sergeant tear it up or advise her to go to magisrates? Coppers were great - they even called me, but on a technicality? Opinions?