South Australia police caution business tycoon after he's spotted riding without cycle helmet ...

Business tycoon Sir Richard Branson has become the latest high-profile visitor from overseas to fall foul of Australia’s compulsory cycle helmet laws.

The 63-year-old, who is in Australia to help promote a new regional airline operated by his Virgin Group as well as undertake speaking and charity engagements, was cautioned by police officers in the South Australian capital, Adelaide.

"He stopped immediately and was spoken to by two police officers at the time," said a police spokesman, quoted on Telegraph.co.uk.

"He was given a caution and then put on a helmet. It was pretty straightforward."

Earlier this year, Twilight star Robert Pattinson also received a caution in South Australia after police were alerted to a picture snapped by a fan of him riding a bike without a helmet.

According to police, foreigners typically receive a caution rather than a fine due to their presumed unfamiliarity with the country’s compulsory helmet laws, introduced more than two decades ago, and which remain a subject of fierce academic debate within the country.

Born in Scotland, Simon moved to London aged seven and now lives in the Oxfordshire Cotswolds with his miniature schnauzer, Elodie. He fell in love with cycling one Saturday morning in 1994 while living in Italy when Milan-San Remo went past his front door. A daily cycle commuter in London back before riding to work started to boom, he's been news editor at road.cc since 2009. Handily for work, he speaks French and Italian. He doesn't get to ride his Colnago as often as he'd like, and freely admits he's much more adept at cooking than fettling with bikes.