"A licence comes into force on the day it is taken out *except when it is taken out in advance*, in which case it takes effect from the first day of the following month. The licence must be displayed on the vehicle *from the day it comes into force*."
But don't do what I done this month... get tax disk early, put disk safely in wallet, then comes the 1st of January and I totally forget to change it...for 2 weeks!!
Thanks guys. I do generally buy my tax disc early, and like you, Chuck, I forget to put it on on the first of the month.
That's a good tip though, to display the old one and the new one so that you've covered every possibilty.