A DANGEROUS driver who killed an elderly man after attempting to overtake six cars has spoken of his guilt in a bid to slow down those who break the speed limit.

David Lamb was 26 when he admitted causing the death of 82-year-old John Richardson by dangerous driving. He had been overtaking a string of vehicles at speed on the A35 from Lyndhurst to Christchurch in his Honda Civic in the moments before the collision, which happened in September 2015.

As he drove on the wrong side of the road, he saw the headlights of a Ford Galaxy coming towards him. He tried to pull into a small space behind a Honda Jazz, which was being driven by Mr Richardson's wife Anne, but hit the car and forced it into the path of the Galaxy and then off the carriageway.

The Jazz finally collided with a tree. Mr Richardson, who was sat in the front seat, suffered life-threatening injuries, and died three months later at Southampton General Hospital.

His wife of 57 years, who later said she had been "robbed" of her husband, suffered neck injuries and burns from the airbag inflating.

Lamb has now recorded a video warning others of the dangers of driving at speed, and said: "I really felt like a killer - you never think it's something you're capable of."

The Dibden resident, who was sentenced to three years in prison and banned from the roads for six years, said: "People say it was an accident and that accidents happen but it didn’t feel like an accident.

"I knew I never meant to do what I did but I was completely responsible for what I did."

He said dealing with the guilt is "almost unbearable".

Sergeant Rob Heard of Hampshire police said: "We want people to be able to understand and relate to the fact that there are real consequences.

"If you speed you are risking not just yours but other innocent people’s precious lives. It’s simply not worth the risk.”

Lamb said: "I’d think nothing of driving at speeds of up to 100 miles per hour on the motorway or national speed [roads] limit looking for some thrills and having a laugh on the road.

"You got to think about what if it goes wrong, because you know I wouldn’t have ended up killing somebody and going to prison all for the sake of overtaking a car.”

He said he hoped others would learn something from him.

"The smallest, silliest little decision can [result in] such massive life changes," he said.