BRITAIN’S first acid attack killer has been jailed for life after it was revealed he carried out another acid assault and attacked prison staff.

Xeneral Imiuru, known as 'Webster', was jailed for 17 years for manslaughter in July 2018

The 21-year old admitted killing Joanne Rand as a result of the attack with a bottle of highly-concentrated sulphuric acid on June 3 2017 in High Wycombe.

He appeared at Oxford Crown Court again today after he was convicted of a further count of using corrosive fluid, administering a noxious substance, assault by beating and causing grievous bodily harm with intent.

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Outlining the case prosecutors said Webster carried out an attack while at a Vue cinema in March 2017.

Webster was at the front door with two others when a row erupted and he threw a substance.

That substance struck another woman who suffered burns to her left foot and completely ‘disintegrated’ her sock.

While on remand at HMP Bullingdon he later carried out two assaults on prison staff on July 27 2018.

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During one assault he hurled urine at a woman and in another he spat in the face of an officer.

His last offence took place at HMP Aylsebury where he assaulted a prison guard in what was described as a ‘savage’ attack.

Prosecutors said Webster had a 'deeply entrenched violent nature.'

In mitigation his defence team said Webster had suffered a difficult childhood.

Sentencing, Judge Peter Ross jailed him today for life with a minimum term to be served of 14 years.