Avon and Somerset police have released a video clip of the shocking moment James Tallon put a knife to a woman's throat as he tried to escape.

The victim, who was working in Specsavers in Frome when she was threatened at knife point by him, has consented to its release.

Tallon held a knife to her throat and threatened to kill a police officer before attempting to hijack a car .

Tallon, of no fixed address, carried out the series of offences as he attempted to evade arrest for other offences.

On 14 December last year in Specsavers in Frome he grabbed a woman from behind and threatened her with a knife when officers came into the store.

Shortly after, the 28-year-old was tackled to the ground by a member of security staff and a struggle ensued. Police officers deployed PAVA spray but Tallon managed to run off.

He then tried to hjack a car containing two young children, demanding their mother get out the vehicle.

The woman's partner, who was in the passenger seat at the time, intervened and Tallon once again fled.

Tallon was eventually detained exactly a year today (16 December 2019).

Following a trial at Taunton Crown Court last week he was convicted of false imprisonment, threats to kill a police officer, affray, possession of a bladed article and assault by beating.

He was sentenced to six years in prison with an extended four years on licence.

Detective Constable George Pettingell said: "I'd like to praise the victims for the bravery they've shown and thank them for supporting the prosecution of this dangerous man. The public are much safer with Tallon behind bars."