i have a personal plate. had it over 20 years. i bought an a3 3 years ago from a dealer and he transferred it for me from my previous car which i traded in.
after having it a year i took it for an mot. the tester said straight away your car wont pass.I'd only just parked the car!
My plate is 3 letters followed by 3 numbers and the dealer when making up the plates had not left a significant gap between the last letter and the first number.ie ABC123 instead of ABC 123 Failed the car and had to buy new plates with the proper spaces. I wasnt happy with the dealer as he had Mot'd it when i first bought it. I never noticed the space needed and no one else had either.