A man broke his collar bone and suffered severe internal bleeding after he was knocked off his cycle by a passing motorist.

Bonar Law, a 68-year-old retired teacher from Watlington, is the latest victim in a spate of deliberate attacks on cyclists.

Thames Valley Police are linking the assault on Mr Law, which happened on the B4009 just outside Princes Risborough last week, to similar attacks in south Oxfordshire.

Mr Law, a keen cyclist, was travelling home on Thursday afternoon when someone in a small white van passed very close to him and, he believes, leant out of the window and pushed him off his bike.

He said: "I could hear the car but I didn't take much notice of that, and wham, I just hit the ground and I didn't know what had happened."

He believes it was a deliberate attack because the van had already driven close to him once before, then pulled into a drive ahead and waited for him to get ahead before making a second pass.

Other people attacked include a 36-year-old cyclist on the A4130 at Gangsdown Hill, near Wallingford; a 63-year-old man in Peppard Road, Nettlebed; and a 26-year-old cyclist in Milton Road, Drayton, near Abingdon, all on June 20, and three days earlier, a 46-year-old man, who was travelling along the A4130, near Didcot.