Hi, I'm scott: Although I cannot provide specific legal advice to specific legal questions, I can address legal isses generally and hypothetical scenarios.
Now, more bad news , I'm afraid: the general process in most systems is to go to court for the ticket, and before being "sentenced," ask the court if the driver can do something to mitigate, like a DD course, and have the ticket vitiated so it does not affect thinks like insurance rates.
And of course whether a court permits that is entirely in their discretion.
No consolation, but I think well of the initiative, and the court and solicitor might also.
If I encountered such a situation, I would probably contact the solicitor's office directly and explain the situation and see if he'll agree to accept the driving course and make a joint presentation asking the court accept it as well as well.
And frankly, it's not likely to work, but there is nothing to lose with that approach.