Just adding my 2 cents here...
(2) If a passenger having failed either to produce, or if requested to deliver up, a ticket showing that his fare is paid, or to pay his fare, refuses [or fails] on request by an officer or servant of a railway company, to give his name and address, any officer of the company may detain him until he can be conveniently brought before some justice or otherwise discharged by due course of law.
This legislation is nearly 130 years old, and doesn't define the meaning of detain. I don't know but I am going to guess that this does not mean the application of force, but merely a request for the person to remain until police arrive.
As has been covered PCSO's have a power to detain, using force, and this is a power granted under legislation.
Even police officers don't have the power to detain, except under a set of limited circumstances. Police officers can merely request that a person remains until details have been ascertained. But that person does not have to remain. If they chose to leave then technically they are free to do so, but then a power of arrest becomes available due to a necessity criteria becoming valid (namely to ascertain their name and address, prevent their disappearance). And Police are granted use of force from Sec 117 of PACE, Sec 3 of Criminal Law Act and Common law, to effect the arrest.
The few exceptions where a police officer can detain are under Sec 1, Sec 60 of PACE, Sec 23 of the Misuse of Drugs act and Sec 44 Terrorism Act (there may be others that I can't recall)
So I don't believe a member of rail staff has any powers, except to politely ask a person to remain.
That’s not correct. I’m interested to know where your train of thought came from? Lots of legislation is 100s of years old, but it doesn’t make it any less enforceable.
The very definition of the word “detain” indicates force may be used if necessary. Police have the power to detain also, under all manner of separate legislation. If somebody refuses to supply their name and address after being suspected of an offence, the police may arrest that person, which requires them being detained in the first instance.
S5 RRA states in black and white that a railway official can detain for, albeit very limit, reason. Simply saying to somebody, “Can I have your name and address please?” Doesn’t constitute detention, but saying to somebody, “if you refuse to supply your name and address, I’ll keep you here until you do”, does.