England's Ashes campaign has been rocked by another alcohol-related incident, with Ben Duckett stood down from a tour match in Perth.

It is understood Duckett was drinking in a Perth bar on Thursday night with a number of players from the England Ashes squad when he poured a drink over a senior player, believed to be Jimmy Anderson.

England's coach Trevor Bayliss said no matter how trivial it might have been, in the current climate it was just not acceptable.

"We can't keep making the same mistakes, look, most of the guys are fine. Somewhere along the lines some of the guys have got to pull their heads in," he said.

"You're here to coach the team and you end up spending most of the time in front of cameras, trying to explain some behaviour that we've been warned about.

"I'm not sure exactly what more I can say, so I'm sure there'll be some stern words from above."

England's coach Trevor Bayliss said he was fed up with having to face the cameras to explain off-field behaviour. ( ABC News: Tom Wilde )

Duckett is not part of England's Test squad but he was among a handful of England A players set to feature in the two-day fixture against a Cricket Australia XI alongside Moeen Ali, which began on Saturday.

The 23-year-old has been suspended pending investigation and faces a disciplinary hearing.

It is not yet known who the senior player was but police were not involved in the incident, which occurred around midnight.

"It was nothing to do with any other people outside of either squad, again just boys being boys I suppose, but just totally unacceptable," Bayliss said.

It was the first evening after England and Wales Cricket Board director of cricket Andrew Strauss agreed to a relaxing of the midnight curfew slapped on the Test squad a fortnight ago.

That curfew resulted from a revelation Jonny Bairstow headbutted Cameron Bancroft in a Perth bar during the touring party's first night on tour.

"When you are in the spotlight like this you can understand why that is said about a team like this," Bayliss said after the first Test in Brisbane, when asked about England's team culture.

"Most people like going out and having a couple of quiet ones but we have got to be careful that we don't do anything stupid.

"They would be extra dumb and stupid if they didn't [learn after Bairstow's misdeed], that's for sure.

"That's what I thought after Bristol as well."

England's Ben Duckett was stood down from the fixture against the Cricket Australia XI. ( Reuters: Cathal McNaughton, File )

Ben Stokes' brawl outside a Bristol nightclub ensured the England squad was put on notice even before they departed for Australia.

Duckett was out with Test players and teammates from England's A squad, who are also touring Australia. It is unclear at this stage whether any other players will be disciplined.

He is likely to discover the outcome of his hearing within 24 hours, and if the suspension stands, he may miss matches scheduled to be played against Perth Scorchers next week.

ABC/AAP