Sir Ranulph Fiennes has been officially charged with careless driving after a head-on crash near Stockport in March.
The 66-year-old was driving his Jaguar when he was involved in a smash that left a 45-year-old man, who was in a Nissan Micra, fighting for his life.
The man, who hasn't been named, suffered a collapsed lung, broken ribs, a broken leg a shattered kneecap and a broken wrist, while a five-year-old boy in the Micra suffered minor injuries and shock. He was kept in hospital for eight weeks after undergoing lifesaving surgery.
Fiennes was said to be 'dazed and bloodied' after the crash, and now faces a possible £2,500 fine and a driving ban if he is found guilty of driving without due care and attention. He was returning home after competing in a night navigation endurance event – a 42-mile High Peak Marathon in Derbyshire.
The crash occurred on the A6 near Stockport, and reportedly saw Fiennes crash into the Micra, which was travelling in the opposite direction, and then hit a stationary Ford Focus.
The Crown Prosecution Service said: "Having carefully reviewed a file of evidence passed to me by Greater Manchester Police, I have concluded that there is sufficient evidence, and it is in the public interest, to charge Sir Ranulph Fiennes with driving without due care and attention."