I was never a fan of private plates until 20 years ago; more because I never had the money to get one so told myself they were for pretentious w*****s!
I then bought two 'W3 1CON' and 'X3 1CON' as Icon is the name of my company so put them on two of my vans. I then joined the Evo owners' club and bought 'P20NDY' as it has always been my nickname and forum name. All three were stupidly left on the vehicles when sold because I was lazy.
I now have a cheap reg with my initials on, which I have put on three cars in the last year, purely because it's mine and not worth anything to anybody else. I offered to get my wife one for the Z4 but she wasn't fussed.
Always used to see 'NO 5' on a Chanel Transit van in London and 'V8' on an Aston in London back in the '80s and '90s. They were cool.