IMO, the contravention did not occur.
The parking bay is situated on the footway but doesn't carry the mandatory footway parking icon;
In any event, you cannot have a parking bay adjacent to DYL;
The display of a BB was therefore proper as regards parking on a waiting restriction.
When I approached, the very odd layout of signs and markings confused me.
The authority will see that the word DISABLED is marked on the road, however there is no reference to the 'BB' logo on the sign. The alleged contravention is being parked in a permit space and the marking 'DISABLED' is not permitted in these circumstances, this is reserved as follows:
Where the bay is reserved for an individual disabled badge holder, an alphanumeric identifier, with or without the word “ONLY” may be added after “DISABLED”.
This bay is not reserved for an individual disabled badge holder, it appears to be reserved for the holder(s) of 'Permit S'. For these purposes it is irrelevant that the qualifying conditions imposed by the council to qualify for such a permit might include holding a BB, the restriction imposed and the alleged contravention relate to permits, not Blue Badges and therefore the placing of the road marking 'DISABLED' is not only not permitted, it is confusing.
And to add further confusion, the council have marked the carriageway adjacent to this bay and for its entire length with another improper sign i.e. simple DYL. It is improper to mark a carriageway in this manner adjacent to a parking bay.
You will therefore see that the use of DISABLED causes confusion because it is inappropriate for the restriction stated in the traffic sign and, additionally, the DYL totally conflict with the presence of a lawful parking bay in the first place. It is not the motorist's task to guess which, if either, applies.
I acted upon the 'DISABLED' road marking and DYL and displayed my BB as required, I therefore expect the PCN to be cancelled.
Just some thoughts offered for comment.
Legal references can be added later depending on the final shape of the reps.