I hope JudgeJ won't mind me copy and pasting the post, but it is factual and informative:
JudgeJ
Fri 26/01/07
11:39
The idea of awarding points or a disqualification to people who have no licence (either because of age or any other reason) is twofold.
Firstly, in the case of disqualification, it means that any further driving undertaken by the offender will mean they are driving whilst disqualified. Without the disqualification all they could be convicted of if caught driving again is driving without a licence � a much lesser offence.
The primary purpose of imposing points is to mark the offenders record (not his licence) with those points. Even if no licence is held, the offender�s record is endorsed with the points so that any consequences of them that would apply to a licence holder also apply to a non-licence holder.
For example, the accumulation of twelve points within three years would lead to a disqualification for �totting�. Points awarded to a non-licence holder who subsequently obtains a provisional licence will count towards their total under the �new drivers� regulations.
Under these rules drivers accumulating six or more points within two years of passing their first test have their licence revoked and have to re-take their test. Points awarded before they pass their test (or getting their licence) only count towards the total if they incur more points after passing their test. This, of course, is to avoid drivers with six points at the time of passing their test from having their licence immediately revoked.