"Martin Underwood" wrote in message
...

The code that they've used is quite cunning:
for vehicles registered between March and September, the two digits are
always the last two digits of the year; for vehicles registered between
September and March, the two digits are always (year of the September) +
50.

What I still don't understand is what is going to happen in March 2011, if
they continue with the present logic, which is to use '0' to indicate March
registrations and '5' to indicate September and the other digit to represent
the last digit of the year! There will still be plenty of vehicles on the
road registered in March 2001 as aa01 abc. Should be interesting!