I have just looked at the evidence from the OP and then read the RORA 1889 sec 5 act and it is as plain as day there is a defence under all three sections.
Such a 'defence' would indeed require 'evidence'. The appropriate 'evidence' for 'having paid his fare' would be a ticket, presented on request. That evidence is strikingly absent, therefore the 'defence' is unsubstantiated.
Whether Dave has refered to case law or not is not relevant in this case.
Each case stands on it's own.
Any prosecution requires the 'evidence' (which as you rightly claim) is particular to each case, and it also requires 'authorities' (from the body of prior judgements) which gives clarity over how the statute is to be applied in all those cases. As Fare-Cop notes, the leading authority on RoRA S5 is in
Corbyn v Saunders which gives some help in how the word 'intent' is to be read from the Act ("There is no reason to import into the RoRA 1889 S.5 the word “permanently”) and it is even more salutory to understand the judgement in
Browning v Floyd because it is in there that the phrase 'intent to avoid payment' is given a less powerful interpretation than in common speech ("Intent to defraud does not matter.").
A Court would also be required to look at the broader scope of the interpretation of the word 'intent' from Section 8 of the
Criminal Justice Act and a raft of judgements analysing and clarifying how a Court is to consider any evidence of 'intent' (including Denning LJ who confirmed that a Court "is not required to look into the mind" of an accused. but must infer 'intent' "from their actions and words").
So, no, each case does not stand on its own. It is a fundamental principle of UK Law that the decisions of the higher Courts are incorporated into the body of Jurisprudence which applies to all Courts thereafter. That's why Courtrooms and Law firms' offices are lined with Law Reports and bound copies of historic judgements, and is why it is often said that a law firm is as good as its librarian.
Additionally, Courts are bound by the Criminal Practice Directions, a large body of regulations and procedures, which includes many rules regarding 'evidence'.
The lack of ticket is the hurdle you have to overcome in your analysis. It's apparent from the correspondence quoted and the OP's posts that the ticket had not been presented to the investigating office by the time of their last posting. A Byelaw exists to require it to be produced on demand (2005
Railway Byelaws - Byelaw 18) and if the ticket isn't subsequently presented, then the passenger would have fallen within the scope of that Byelaw.
Perhaps you should explain that to the countless magistrates who have convicted despite the defendant giving their name and address.
I don't have to show it. Solicitors and the CPS already have done.
You might be surprised if you knew the qualifications and experience of some of the people who have already contributed their knowledge to this thread.