There's no need to dance around matters, this is not a private parking issue. Your earlier posts did not make clear that as regards these procedures you and the company are the same because you have authority and all matters are conducted on the company's behalf.
A NTO dated 30 July is deemed served on 1 Aug. which is day 1, therefore day 28 is 28th Aug.
As reps, IMO the contravention did not occur and procedural impropriety.
I think the PI is a shoo-in winner, see below:
Notice to owner
20.—(1) Where—.....
(a)....
(2) .....
(3) A notice to owner must, in addition to the matters required to be included in it under regulation 3(2) of the 2022 Appeals Regulations, state—
(a)the date of the notice, which must be the date on which the notice is posted,
(b)the name of the enforcement authority serving the notice,
(c)the amount of the penalty charge payable,
(d)the date on which the penalty charge notice was served,
(e)the grounds on which the civil enforcement officer who served the penalty charge notice under regulation 9 believed that a penalty charge was payable with respect to the vehicle,
(f)that the penalty charge, [...] must be paid within “the payment period” as defined by regulation 3(2)(a) of the 2022 Appeals Regulations,
Which is:
3.—(1)
(2) An enforcement notice must include the following information—
(a)that—
(i)
(ii)...the period of 28 days beginning with the date on which the notice is served (“the payment period”).....;
The NTO states that the penalty must be paid no later than the last day of the period of 28 days beginning with the date of this Notice to Owner.
In short, they've c****d-up!
They've used the payment period which applies to moving traffic contraventions!
As regards the contravention, I would argue that this did not occur.
These restrictiond operate at right-angles to road markings.
GSV seems to show that there aren't any loading blips either to the immediate rear of the van or to its nearside(the restriction stops ahead of the vehicle and terminates at a slab of concrete, indicated by termination markings i.e. it doesn't run 'under the concrete'). If you can imagine the area as a square with four quadrants, the van is in the lower left, the bins and hardstanding in the lower right(no markings), the upper left is vacant road and the upper right is where the DYL and loading restriction end. Immediately to the left of the lower left quadrant is where DYL and no loading end.