To help you overcome your cynicism, here’s an extract from the Magistrates’ Sentencing Guidelines on Careless Driving:
Momentary lapse of concentration or misjudgement at low speed.........3 - 4 points
Loss of control due to speed, mishandling or insufficient attention to road conditions, or carelessly turning right across on-coming traffic.........5 – 6 points
(There is a further category covering high speed incidents and those bordering on Dangerous Driving where the suggestion is 7 – 9 points or a disqualification).
The full guidelines are available here (page 117):
http://www.sentencing...e_1_%202%20_3_web.pdf
You will see that the offence can be aggravated by “carrying out other tasks whilst driving” but I would suggest Ms Harman’s incident falls at the very lowest end of Careless Driving and so 3 points was appropriate in all the circumstances, and certainly no more than four in any event, Crazychickx.
It often seems that privileged people are treated more leniently by the courts, but in this case I believe the CPS charged appropriately and the magistrates were spot on with their sentence.