First car I bought at 16 was a non MOT'd 1960 pale blue Austin mini "seven" My old dad quite rightly forbade me from bringing it home so I was forced to sell it on . The registration number was CGM 96 and it went to an Instructor at the Apprentice traing centre I was at for a whopping £15 profit . CGM was his initials iirc.
I did some electrical work for a chap and he offered to pay me with the buff reg. book and chassis plate for a red and black mini plus a little cash. As it happened I had a school friend with just such a car in his garage about to be scrapped . This was pre DVLA days and all it took was a request for the local council to inspect the vehicle and then once passed the reg could be transferred .
New plates suitably "aged" , chassis plate rivetted on and heads also "aged " and buff book casually placed on seat . One 5 minute inspection later 63 AGA was mine .
Incredibly the number issued to replace 63 AGA on the old mini was .....7 KVD .
Suitable short time later 7 KVD was mine but only on the understanding that no further transfers would be allowed .
63 AGA is still on a dear late friends widows car and I had 7 KVD for nigh on 40 years until I sold it after moving to Ireland , it's on a Porsche Turbo now .
I bought my E24 in the North and it came with the number HIL 6351 . I had to jump through some shady loops to do it but registered it to a friend in Wales and then sold the number on and it now resides on a rather tasty late model E24 Highline 635i.
Like many of you when I'm asked the reg of any of our vehicles now I'm at a loss and have to refer to photos or run out side to look.
The first real owned and driven car was a much loved MK1 Cortina ASC 405B which I kept for two years and spent wayyy too much on it inc. 1600 x flow , 2000E gearbox and Capri discs . I loved that car and wished I'd kept it instead of buying that 2 year old MGB GT ......Ah well.....