I found the info re Hall's previous.
Prosecutor Simon Spence revealed that Hall had previously been sentenced to a total of 17 months at a young offenders' institute for assault causing actual bodily harm and wounding. He was sentenced at Bury St Edmund's Crown Court in June 1997.
He said the assault conviction, which had incurred eight months of the sentence, had happened when Hall approached a young man called Martin Russell in McDonalds in Ipswich, pushed him and asked: "What's all this about your dad accusing me of doing it in his car?"
The victim was left with cuts to his ear needing two stitches, a grazed chin and a cracked tooth on January 13, 1997.
Mr Spence added that on January 6, 1997, Hall lay in wait for a man called Stefan Bell outside a doctor's surgery in Ipswich. He went up and said hello, then for no reason punched him in the face and continued kicking him when he fell to the ground, while a co-defendant hit him over the head with a bottle.
After today's murder verdict, Mrs Justice Rafferty said: "Only one sentence is permitted by law and that is life imprisonment."
But she ordered reports to be prepared before officially proclaiming the sentence.
EX-GIRLFRIEND TELLS OF MOOD SWINGS AND VIOLENCE – two pages of background on the killer and his victim only in TONIGHT'S EVENING STAR.
http://www.ipswichstar.co.uk/news/life-behind-bars-for-capel-killer-1-132809
So Hall was 19 yoa when he first carried out acts of violence which escalated to murder by the time he was 24 yoa.
So what about Bambers quite apparent propensity for violence Holly?
"Mass killer Jeremy Bamber launched a vicious attack on a fellow prisoner with a broken bottle.
He rammed the jagged edges of a sauce bottle into his victim's face and tried to cut off his nose and ears. The inmate's scalp was also cut open.
The Home Office last night pledged an inquiry in the attack by Bamber, jailed for life after slaughtering his family for a pounds 500,000 inheritance.
The victim is believed to be serving a sentence for burglary. He was rushed to hospital for emergency surgery after the attack.
It is not the first time that Bamber, an inmate at Long Lartin top security prison in Worcestershire, has been in trouble in jail. He has been one of the most hated prisoners in Britain since the 1985 killing of his adoptive parents, his sister Sheila and her twin sons.
Last year he was robbed of pounds 1,000-worth of jewellery, cash and personal belongings.
Earlier this year he was briefly removed from Long Lartin for his own safety after surviving a knife attack. He was transferred to Full Sutton jail near York, where he took up martial arts and keep-fit for his own defence.
It is understood the man he attacked with a bottle had tried to pick a fight with him.
A Home Office spokesman said there would be a major investigation.
"There was an incident in the prison which left one prisoner seriously injured," he said.