While on a trip Down Under, Arnold Schwarzenegger took to two wheels around the city of Melbourne, but didn't remember his helmet

Hollywood star Arnold Schwarzenegger fell foul of the law on his recent trip to Australia, having been pulled over by police for cycling without a helmet in Melbourne.

Helmets are compulsory in the city but the former Governor of California chose to go bare-headed as he picked up one of Melbourne’s hire bikes.

The Terminator star was Down Under for the annual Arnold Body Building Classic on Saturday and even made an appearance at the Formula One grand prix at Albert Park the following day.

Arnie is a reportedly a keen cyclist and jumped on two wheels to get around Melbourne at the weekend, even surprising a group of young riders by stopping for a photo with them.

>>> Chris Boardman hits back at critics after riding without helmet

Arnold Schwarzenegger meets young cyclists in Melbourne (Photo: Facebook)

Arnold Schwarzenegger meets young cyclists in Melbourne (Photo: Facebook)

“I saw a group of cyclists riding ahead of me and we just went up to do a routine intercept,” Senior Constable Robert Gillson told Fairfax Media on Tuesday.

“Then we noticed that Arnold Schwarzenegger was in the crowd.

“We spoke to him briefly and had a little chat with him about the reason why I pulled him over.”

The officer confirmed that the Austrian-born actor had not been fined for his infraction, but was advised to pop into a corner shop to pick up a cheap helmet.

Screen Shot 2015-03-17 at 10.02.12

Schwarzenegger is not the only big name to be caught out by Melbourne’s strict helmet laws, with London Mayor, Boris Johnson, also making the mistake in 2013.