English wicketkeeper Jonny Bairstow and Australian batsman Cameron Bancroft have both spoken following the first Test after reports the Englishman headbutted the Aussie at a Perth bar earlier this month.

Reports emerged on Sunday evening that the pair were involved in an incident while England was in WA for the team's first practice match of the tour.

Bairstow, who was then followed by coach Trevor Bayliss and captain Joe Root, spoke to the media first, explaining the incident had been blown out of proportion, while Bancroft clarified exactly what transpired.

“It's been blown completely out of proportion,” Bairstow said.

“We were allowed out. We caught up with some of the West Australian guys.

“We were in the bar having a good laugh and good evening. Cameron and I enjoyed the evening and continued to do so.

“There was no intent or malice about anything during the evening.

“There is no animosity. Hopefully we can swipe this under the table and continue a fantastic and tight knit series.”

Bancroft, who fronted the media with skipper Steve Smith who struggled to contain his laughter, told reporters Bairstow headbutted him as part of a strange greeting. However, he confirmed there was no malicious intent as the pair got along well later in the evening.

“I remember it very clearly,” Bancroft said.

“It was very friendly mingling the whole night. As the night progressed it was great to meet some of those (England) guys.

“I got into a very amicable conversation with Jonny and he greeted me with a headbutt kind of thing.

“I was expecting a handshake. It wasn't the greeting of choice I expected.

“There was no malice in his action and we continued having a very good conversation for the rest of the evening.

“At the time he said sorry. It was just really weird. It was so random.

“I certainly didn't expect it coming. A handshake or hug was something I expected more than a headbutt.

“There was certainly nothing malicious about his action.

“I don't know Jonny Bairstow but he says hello to people very differently than most others.

“We got along for the rest of the night. I let it go and got on with it.

“He didn't knock me over. I've got the heaviest head in the West Australian squad.”

The incident came to light after David Warner was heard on the stump mic sledging English fast bowler bowler James Anderson, saying “don't headbutt our mates”.

Despite the friendly nature of the incident, Bayliss said he expected his players to change their behaviour after the incident was made public.

“There were some young guys out on a night out and some silly things happen that seem a bit funny but they come up later on," Bayliss said.

“It gives the opposition team ammunition. It is a distraction.

“That's the disappointing thing. We make dumb decisions at some times.

“They'd be extra dumb and stupid if it (changing behaviour) doesn't happen.”