Count Arthur, I think some areas just don't offer them, period.
Just looking back at the question & answer sheet that came with my original form. You may be interested in the following:
"You have the right to challenge this offence in the courts. If you are found guilty, then a magistrate will determine any fine and points that are to be endorsed. YOU ARE REMINDED THAT THE COURTS MAY INCREASE THE FINE AND THE POINTS. YOU MAY ALSO BE ORDERED TO PAY COURT COSTS.".
Now, bearing in mind that most magistrates are self-righteous, holier-than-thou *rude words*, what do you think your dad's chances are ... ?
When I got done the other week, I could have argued that the road was badly signed, clear of other traffic and that I was driving quite safely. That's all true, but 37 mph is 37 mph at the end of the day. Fair cop, gov, as they say. Yes, I feel a bit silly, but I'm not the first and I won't be the last, and it's not the end of the world. And believe me, I'm the most obstinate person I know when I have a point to prove.
You say your dad appealed and won last time? Compare the circumstances then to the circumstances now. And I would suspect that even if he 'got away with it', they would still look at his past record before making their decision.
The points will remain valid for 3 years, but will show on his licence for 4 years. I'd suggest again, if he hasn't already got a dangerous number of points on his licence, pay the £60, take the points and just drive a little more carefully in the future.