Dead: One of Britain's most notorious paedophiles, Robin Hollyson (pictured), has been found hanged in prison. The IT expert was serving a 24-year jail term

One of Britain's most notorious paedophiles - who was part of a gang that raped drugged babies and toddlers and streamed the abuse on the internet - has been found hanged in prison.

Robin Hollyson, 31, was three months into a 24-year jail term.

He admitted to raping a baby from the age of three months and filmed himself doing it in what the judge called one of the most horrific abuse cases on record.

Hollyson, from Luton, Bedfordshire, who changed his name to James King after his conviction, was found unresponsive in his cell at HMP Bristol on Friday and died in hospital two days later.

It has been revealed that the IT expert was previously on suicide watch but was taken off it.

He was part of a paedophile ring of seven men who were jailed for a total of 78 years at Bristol Crown Court last September.

Judge Julian Lambert told John Denham, Matthew Lisk, Adam Toms, Christopher Knight, David Harsley and Matthew Stansfield they were 'evil beyond rational understanding'.

He added: 'In the worst nightmare, from the very deepest recesses of the mind, at the darkest hour of the night, few can have imagined the terrifying depravity which you men admit.'

The paedophile gang broadcast live online video of their abuse of drugged babies and toddlers.

Branded ‘monsters in disguise’, the gang groomed mothers – some while they were pregnant – to gain unsupervised access to their children.

Last year a jury was told that the evidence they would hear would ‘take you into a world you wish did not exist’.

Three of the gang were registered sex offenders after being convicted of possessing child abuse images and police have faced questions about what steps were being taken to monitor them.

The paedophiles exploited women in their own social circles to achieve access to children they could abuse. In some cases, they contacted other members of the gang who would drive long distances to join in.

He was part of a paedophile ring of seven men who were jailed for a total of 78 years at Bristol Crown Court last September. The gang included John Denham (left), Matthew Stansfield (middle) and Matthew Lisk (right)

David Harsley (left), Christopher Knight (centre) and Adam Toms (right) were also part of the paedophile ring

One offender got up at 4am to cross the country to abuse a child before driving home and making it to work on time.

One baby was raped and sexually abused by three of the gang members over a period of nine months. The others watched on live internet feeds.

A second victim, a four-year-old boy, was forced to watch as one of them committed sex acts and others watched from a hotel room.

The gang photographed one of the victims holding a piece of paper with the password necessary to access the online broadcast.

Far from using hidden networks or specialist software, police discovered the men often used popular internet services such as Skype, Bristol Crown Court heard last year.

Hanged: Hollyson, 31, was three months into a 24-year jail term when he was found unresponsive in his cell

Paedophile: It has been revealed the IT expert (pictured) was previously on suicide watch but was taken off it

Vile: Hollyson was part of a gang that broadcast live online video of their abuse of drugged babies and toddlers

The gang also used online business conferencing software as a way of exchanging images without physically downloading them to their computers.

Officers believe the abuse was shared with more than 80 other paedophiles around the world in this way. Network members greeted each other with the words ‘paed’ and ‘paedo’ as they arranged meetings and boasted of their attacks.

They also used a term investigators had not come across before, ‘nep’, which referred to ‘nepiophile’, someone sexually attracted to babies and toddlers.

'From the very deepest recesses of the mind, at the darkest hour of the night, few can have imagined the terrifying depravity which you men admit Judge Julian Lambert

Last September Hollyson received a 24-year prison sentence plus an extension of eight years on licence while Toms was jailed for 12 years plus an extension of four years on licence.

Knight was jailed for 18 years plus an extension of six years on licence and Stansfield received a 10-year prison sentence plus an extension of four years on licence.

Denham was jailed for eight years plus an extension of four years on licence.

Lisk was jailed for four years plus an extension of three years on licence and Harsley was sentenced to two years in prison.

Today HMP Bristol said: 'HMP Bristol prisoner James King was found unresponsive in his cell on Friday.

'Prison staff attempted CPR and paramedics attended, but he died in hospital on Sunday.

'As with all deaths in custody, the independent Prisons and Probation Ombudsman will conduct an investigation.'