Awesome, i bet FGW▸ are waiting for the penalty fares to come rolling in!
Prosecutions you mean! A penalty fare will only be issued if there is no fraud suspected, a bit like a police on the spot fine for drinking etc, to produce a fake ticket is blaitent fraud with the intent to obtain a service by deception (false ticket!)
The last fare strike tickets hardly looked like the real thing. Using a ticket with the destination "To Hell And Back" and "Cattle Class" is hardly deceptive. Fraud would be more along the lines of making a fake ticket with the correct destination which looked identical to the genuine article and not mentioning participation in the "strike".