My first legal bike was a Suzuki 80 in 1967 on "L" Plates; on which I was run off the road and finished up off work for nine months!
I decided to
NEVER ride a small bike from there on, so in 1981 (recovered and divorced) I bought a BMW1000RT and rode it for many years on a Kuwaiti International Licence that was issued in Saudi Arabia, after I had frigged my UK Driving Licence.
In nearly fifteen years of illegal biking I never had an accident or got stopped by the Police, but when I became an HSE Manager I decided that I really ought to get a valid licence, sat my test and had another 10+ years of happy
and legal biking!