That's covered by "system has to be radically changed". UK driving licences give you room for 12 "penalty points" worth of mistakes before you risk being banned from the road, of which speeding costs you at least 3: https://www.gov.uk/penalty-points-endorsements/endorsement-c...
Indeed. 4 strikes and you are out seems fine to me (as a UK driver). You can also opt to take a speed awareness course in leu of the points, I believe