As a new driver you are subject to a two-year 'probationary period' starting on the day that you pass your practical test. If you are convicted of a driving offence and are awarded penalty points totalling six or more, and you committed the offence during the probationary period, your driving licence will be revoked. You will have to obtain a provisional licence and retake both the theory and the practical tests. Penalty points imposed before you passed your driving test will only be counted if you commit a further offence after you pass the test and this is committed within three years of the original offence. There is no minimum time limit for which your licence must be revoked. As soon as you have passed both the theory and practical parts of another driving test, you can apply for a full new licence. However, the penalty points will remain on your driver's licence for four years from the date of your offence. There is no appeal against the revocation of the licence but you may be able to appeal against the conviction or sentence. If you do this, you can ask for the licence to be restored pending the appeal.
For further information call in or telephone your local CAB.
Please note that this answer is correct as of November 2011