A paedophile hunter had a finger viciously bitten off while trying to seize a pervert who was tricked into thinking he was meeting a 14-year-old girl.
Steve Little, 60, of Liverpool, had confronted Thomas De-Castle-Lynne, 46, with fellow members of Catching Online Predators.
The grandfather said restrained De-Castle-Lynn on the ground after he became aggressive but that his finger ended up in the pervert's mouth during the scuffle and it was savagely torn off.
De-Castle-Lynn has now been jailed for 10 years at St Albans Crown Court for a variety of offences including grooming, racial harassment and wounding with intent.
Doctors desperately tried to save Mr Little's finger and were able to reattach it, but it was later amputated after the wound became infected.
Paedophile hunter Steve Little, 60, pictured, had his little finger savagely bitten off by a pervert while trying to restrain him
Mr Little's finger ended up in Thomas De-Castle-Lynne's mouth as he was wrestling him to the ground and the pervert clamped his jaws and tore it off, pictured
De-Castle-Lynne, 46, pictured right and left, in the aftermath of the biting, has since been jailed for 10 years for grooming and wounding with intent among other charges
Mr Little, a retired nurse, who joined the group a month before the incident, said: 'A colleague and I had been posing up as a 14-year-old girl online who agreed to meet Thomas Jean De-Castle-Lynne.
'He wanted to meet at a train station and thought the girl was coming alone, he had no idea it would be a group of us.
'The messages he sent were disgusting, and I was passionate about bringing him to justice.
'But once he realised, he completely lost the plot - he ended up punching the woman filming in the face, which is when the team and I tackled him to the ground.
'It wasn't until it was too late that I noticed my finger was in his mouth.
'There was my blood all in his mouth but he didn't let go - the pain was excruciating as he clamped down on my little finger.
'It was torn straight off and was hanging by just a small amount of flesh.'
Mr Little's finger, pictured left and right, was initially stapled back onto his hand by doctors but had to be amputated days later after the flesh became infected
The grandfather, pictured, said he will not return