CRASH investigators calculated killer driver Kellie Tandy's Volkswagen Toureg had been travelling between 58mph and 66mph – in a 30mph zone – as it approached the scene of the crash.

On the final approach to the junction, officers calculated the car was travelling at around 51mph.

Officers also found Tandy was not insured to drive the Toureg.

Tandy was jailed today for three and a half years after admitting causing death by dangerous driving, failing to provide a specimen, and driving without insurance.

In a statement, Mr Ramsey’s family said: “There can never be justification for causing this much agony, hurt and devastation to a family and we would like to thank Essex Police officers for their assistance.”

Mr Ramsey was described as a “decent, kind and gentle husband of 50 years” and a “doting father and grandfather”.

Investigating officer Detective Sergeant Adam High, from the Serious Collision Investigation Unit, said: “Kellie Tandy’s actions were reckless and irresponsible and have cost an innocent man his life.

“She was driving dangerously, with a young child on board, showing a blatant disregard the safety of others.

“Ronald Ramsey was walking his dog, minding his own business, when he was hit by the car Tandy was driving."

He added: “No sentence will ever bring him back but I hope the fact Tandy is going to prison and won’t be able to get behind the wheel for some time will be of some solace.”