Video:
I'll start with the bad news, and why basically everything you say is misconceived.The video shows you in the bus gate length of road at 4:43 pm, there's no doubt about that.
A bus gate such as the one here can be enforced under code 34j, see the decision of the High Court in
Oxfordshire County Council, R (on the application of) v The Bus Lane Adjudicator [2010] EWHC 894 (Admin).
The blue signs seen here
https://maps.app.goo.gl/nzx32DLehwcvmvUY8 create the restriction, and there is space before the bus gate to turn around. No road markings are required for this type of restriction, as you're meant to know not to drive past the signs (it might be that you're not familiar with these signs, but that's obviously no defence).
The council is not required to provide any evidence at this stage, indeed the fact that they provide any evidence at all is above and beyond what the law requires. All they need to provide is the essential details of the contravention, and either you accept liability or you contest. If you take the matter all the way to the tribunal, at that stage the council must prove its case with evidence, but that's a long way off.
Realistically we have to assume the council would provide photos of the signage at the tribunal, it is possible they might mess up the evidence pack but it would be a massive gamble to risk the full penalty just on that (and most of the time this gamble would not pay off).
Arguments about whether the PCN has a "
next page" or the appropriate tick-boxes are misconceived and would be dismissed as an argument over semantics,
Arguable grounds:The most obvious point is the will / may flaw on the PCN, see for instance the decision in
Nigel Houlton v Reading Borough Council (RG00028-2002, 22 June 2020), the majority of adjudicators accept this but one or two don't, if you look up "
will / may" on
this spreadsheet you'll see all the relevant decisions.
The other issue worth exploring is whether the council could realistically prove that its camera device is in fact approved, so I've made some enquiries about that.
Lastly there's the link approach explained
here, which is a strategy of last resort. However rather than making a plea for discretion, it would seem sensible to construct a representation that provides the authority with links to relevant will / may decisions, which is a much more solid argument that mere mitigation.
Please let us know if that all makes sense to you, and give others a chance to comment. Once you've read up on the will / may issue I can draft a representation for you if you're happy to go ahead with the strategy I propose.