William Treadwell was jailed for 10 years at Southwark Crown Court after he killed plumber Gary Amer
A pensioner who stabbed a plumber 30 times in a frenzied fatal attack as he struggled to fix a 48-year-old boiler has been jailed for 10 years.
William Treadwell, 68, beat Gary Amer six times over the head with a mallet before knifing him to death at his home in Walworth, southeast London on August 17, 2018.
Treadwell then threw a sheet over the 63-year-old workman's body and made his way to his local pub where he dialled 999 to confess to the killing.
He denied murder but admitted manslaughter on the grounds of diminished responsibility - and the prosecution accepted his plea.
Judge Deborah Taylor jailed Treadwell for 10 years at Southwark Crown Court and said he would probably serve half the term. A woman, thought to be a relative of the victim, shouted from the public gallery: 'This is ridiculous - it's a joke.'
Neighbour Janet Jarrett, 73, had claimed at the scene that the men had been arguing in Treadwell's flat after Amer took a long lunch break.
‘He came to fix the hot water on Thursday but he apparently went off for a three-hour lunch break then said he was coming back on Friday. Apparently he needed to pick up extra parts,' Ms Jarrett said.
The court heard Treadwell was charged £1,350 to have the boiler fixed.
Timothy Cray, prosecuting, had said Mr Amer had been carrying out repair work on the boiler at Treadwell's home on the day of the attack.
Judge Deborah Taylor jailed Treadwell for 10 years at Southwark Crown Court and said he would probably serve half the term. A woman, thought to be a relative of the victim, shouted from the public gallery: 'This is ridiculous - it's a joke'
'The defendant attacked Mr Amer from behind while Mr Amer was working on the boiler.
'Mr Amer would have been unable to defend himself or to avoid the many blows which were inflicted.'
Mr Cray said the 'sudden and overwhelming attack' left the victim with 'multiple head wounds, multiple stab wounds and no defensive injuries, which again are consistent with a surprise attack.'
The prosecutor said Treadwell's sister found the plumber's dead body in the kitchen after returning from a shopping trip.
'The defendant had covered the