The 60 year old, from Leighton Buzzard, shared 500 of the pictures and movies with other perverts, Luton crown court heard Tuesday 22nd July.
After hearing that the man had also been convicted of having indecent images of children in 2004, Judge David Farrell QC said that he regarded him as posing a significant risk of causing sexual harm to children.
He passed an extended sentence of 7 years. He received a jail sentence of 3 years and 4 months with a further 3 years 8 months when he will be on licence and liable to be recalled to prison.
Prosecutor Daniel Siong said the police raided the man’s flat on 12 March this year. There was a delay before he opened the door. He had hidden a computer in cellophane and towels.
After a search police found the computer. It was analysed and found to contain over 400 Category A images – the most serious level. There were more than 1300 at Level B and more than 13,000 at Level C.
531 of the images had been placed on a file server by the man, so he could share them with other paedophiles.
At the time of his arrest, the defendant was coming off the licence from the sentence he received in 2012 for abusing the girl.
The man pleaded guilty to six charges: distributing indecent images, three charges of downloading Category A, B and C images, and two of possessing indecent images.
Andrew Morton, defending, said his client was an ‘isolated individual’ who had not engaged with probation officers when he was released on licence from his previous sentence.
“He expresses regret and contrition. The majority of the images were at Level C – the lowest level.”
Mr. Morton went on: “He hopes he can have access to remedial programmes while he is in prison. ”
Judge Farrell told him: “You are a convicted paedophile who has offended yet again. You are a persistent and deliberate sex offender. You can’t stop yourself.
“Without treatment, which I hope you will get in custody, you will continue to present a risk of causing sexual harm to children.”
The man must also register as a Sex Offender and abide by the terms of a Sexual Harm Prevention Order indefinitely.