(2-part post):
You'll need to be
extremely careful for the first two years after passing your test. Your licence will be endorsed with between 6 and 8 points for driving without insurance.
http://www.direct.gov.uk/en/Motoring/DriverLic ensing/EndorsementsAndDisqualifications/DG_100 22425
Those points will count for 'totting up' purposes for 3 years. (You have to wait for a further year before they can be erased from your licence).
Normally, once somebody passes their test, they have to ensure that they don't acquire 6 points on their licence (e.g. from 2 speeding offences) within the next two years. If they do so, their licence is revoked. They have to re-apply for a provisional licence and re-take their test.
However, once you pass your test, you'll have to ensure that you don't pick up
any points within the first two years after passing your test. If you do so, the points you got for driving with no insurance will be added to the new points, resulting in the automatic revocation of your licence. i.e. in your case, a
single speeding offence within the first 2 years of passing your test (assuming that it's within 3 years of the points for 'no insurance' going on your licence), will mean that your licence will be revoked:
http://www.direct.gov.uk/en/Motoring/LearnerAn dNewDrivers/NewlyQualifiedDrivers/DG_4022566