Ross Dawson, 32, was jailed for 35 years for three robberies and an aggravated burglary
A violent robber who tricked an 84-year-old woman into giving him a lift before shoving her out and taking her car has been jailed for 35 years.
Ross Dawson, 32, of no fixed address, carried out a string of violent robberies including holding cab drivers at knifepoint in two incidents, robbing a women with the help of a female accomplice as well as aggravated burglary.
In the chilling attack on the 84-year-old woman, Dawson approached the car at her house in Romford, east London, and asked for a lift to hospital.
He claimed his pregnant wife was not feeling well on July 22, 2017, and the pensioner let them in.
But on the way Dawson forced her to stop on a secluded road, pushed her out of the car and sped away from the scene.
The incident was recorded on a passerby's dash-camera.
Dawson also dumped his 15-year-old female accomplice, who cannot be named for legal reasons, and she was arrested and found with a black handled, eight-inch kitchen knife in her handbag.
In one attack on July 22, 2017, he asked an 84-year-old woman to take him and who he said was his pregnant wife to hospital in Romford, east London
Dawson told the elderly woman to pull over on a secluded road and he pushed her out of the car and drove away
The scene was caught on the dash-cam of a car behind (pictured) and Dawson left his female accomplice on the side of the road. She was arrested and found to have an eight-inch knife on her
Detective Sergeant Billy Baxter said: 'This is a despicable individual and whose violent crimes is some of the worst I have ever investigated.
'His sentence clearly reflects the threat he was to the public and the fact he will not be even be eligible for parole until 20 years means his victims are afforded some peace of mind which will help them move on from such a harrowing experience.'
In a similar attack, Dawson and a woman got into a taxi in Romford in the early hours of July 4, 2017.
He told the driver to pull over because his pregnant wife was feeling sick in the back seat.
In a similar attack he asked a taxi driver to pull over due to his female accomplice - who he said was pregnant - feeling sick
After the car stopped, Dawson pulled out a knife, punched the driver in the face and demanded money from him.
The cab driver said he could
