WA driver charged after cyclist hit-run

A WEST Australian man has been charged after he allegedly crashed a four-wheel drive into two cyclists then drove off.

The man and woman, aged in their 20s, were riding along a main road in the Busselton suburb of Geographe late on Saturday night when they were both struck from behind by a vehicle.

Police allege the car did not stop.

The woman suffered serious head injuries and was airlifted to Perth, while the man sustained minor injuries and was treated at the local hospital.

The 25-year-old accused was charged with four offences including failing to stop and ensure assistance is received after an incident occasioning grievous bodily harm.

He is due to appear in Busselton Magistrates Court on July 30.