I think one problem is that so much stuff which is not directly relevant to this case is included it's hard to see the wood for the trees. In particular, two different aspects of licence endorsements are being treated as one.
First, if somebody is convicted of certain offences related to driving, then the conviction is recorded on the defendant's driving licence in addition to any penalty ie licence endorsed, unless the court finds special reasons for not doing so. IME (which is not recent) typically this might involve an offence committed by the driver of an emergency vehicle responding to an emergency.
Then, a series of endorsements within a set period normally results in a "totting up" disqualification. Obviously, if a conviction does not result in endorsement, it can't be counted towards totting up. Originally, all endorsements carried the same weight and it was "three strikes and you're out." More recently, different offences have attracted a different number of points and twelve points = disqualification, unless the court finds special reasons for not disqualifying eg the infamous exceptional hardship.
I've not dug out the links to the different bits of legislation through idleness. There are more results from learned friends offering their services than there is the info needed. If there's a surviving decent local rag in this part of Buckinghamshire, there may be a more coherent report of the court proceedings.
(I have mentioned before that sentencing decisions are something I try not to fret about so my knowledge of the rules isn't great without looking them up.)
I think this is the local media report rehashed by road.cc
https://www.bucksfreepress.co.uk/news/1 ... sts-death/
I don't think it says anything different to the road.cc report, but it's not jumbled up with other stuff
For anybody want to research what I've tried to cover above, a starting point is the Road Traffic (Offenders) Act, 1988. Part II covers endorsement and disqualification.