A violent thug who posted on Facebook from his prison cell that his life of crime was over abducted a man at knifepoint just one month after his release.

Skinhead Terry Grice, 33, was serving an eight-year sentence for a terrifying machete raid on an elderly couple and their grandson when he vowed to go straight.

But after being released just four years into the stretch, the dad, of St Peter’s Place, Canterbury, lured a man to a house and later watched as he was stabbed four times.

His part in the chilling abduction has landed Grice back behind bars, where he used a phone in November 2014 to tell a friend on Facebook it would be his final time in prison.

Alongside a picture of him posing in his cell, he wrote: “Last time mate. Chillin with kids when I’m out summer. Not about this any more.”

But just four weeks after his release on October 15, Grice and a friend, Daniel Brown, lured Harry Waterman to an address in Folkestone, where they lay in wait armed with knives.

The pair demanded money from Waterman before forcing him to drive his van to a remote part of the town, where he was knifed four times in the leg by Brown, spraying blood around the vehicle.

Mr Waterman only escaped after he convinced his abductors there was cash at his aunt’s house and managed to lock himself inside the property and call police.

The traumatised victim told a jury at Canterbury Crown Court he had feared he would be killed during the abduction in November.

Brown, 28, of Warren Close, Folkestone, was convicted by a jury of kidnapping, wounding with intent, theft and attempted robbery. He was given an extended jail sentence of 10 years.

Grice denied kidnapping, unlawful wounding, theft and attempted robbery, but was convicted and sentenced to nine years in prison by Judge Heather Norton.

It was the same judge who in 2012 jailed Grice for eight years for what she described as an “horrendous crime”.

Aged 29 at the time, Grice was part of a hooded gang who stormed into a house in Dene Walk, Margate, in August 2011 and ordered a terrified family to open a safe at gunpoint.

A disabled grandmother threw herself onto her seven-year-old grandson and refused to move, despite being threatened by Grice, who was armed with a two-and-a-half foot machete.

She later told police that since the ordeal she had felt depressed and scared to be alone in the dark.