Jack said this lack of consistent training put vulnerable women at risk.
"It could cause an even bigger issue then, if something looks funny," he said.
"If there's a perpetrator making a woman feel uncomfortable when she's spending extended time up at the bar asking staff - it could put her in a more vulnerable position."
He said he believed many venues were "just ticking boxes" rather than taking their responsibilities seriously.
"It's sort of futile in a way, it's pointless," he added.