A dangerous paedophile has been handed an extended sentence of more than 14 years for sexually abusing schoolboys.

Music tutor David Brown was jailed for 11 years and one month, with an extended licence period of three years, for a string of sex offences against boys as young as seven at Ipswich Crown Court on Friday.

The 40-year-old was described as a “vile excuse for a man” by a victim’s mother and assessed as presenting a significant risk of causing serious harm by further offending.

Brown, formerly of Duke Street, Hintlesham, near Ipswich, had already admitted 20 offences against nine boys, including six counts of sexually assaulting three boys under 13, four of recording the abuse, six of voyeurism, three of making indecent photographs and one of attempting to cause or incite a child to engage in sexual activity.

Judge David Pugh said Brown, more recently of Elthorne Park, Clacton-on-sea, “acted as a predator” by deliberately grooming boys in order to abuse them for sexual gratification.

Prosecutor Claire Matthews had described how the scale of offending was uncovered after one of the boys confided in his mother.

When arrested in January 2019, Brown tried to accuse her of fabricating the allegations in retaliation for an unrequited “obsession”.

Police uncovered 1,831 indecent images and movies of children on Brown’s laptop, including a video and images of him sexually abusing three boys and footage from secret cameras installed in toilets used by other boys.

Each victim’s image was cropped by investigators and had to be presented to their parents for identification.

Forensic analysis also recovered online chatroom messages sent by Brown under the guise of a 14-year-old girl, encouraging young boys to send indecent images and engage in sexual activity.

The court heard statements from parents of the boys Brown abused, expressing their anger, shock and disgust, and describing the various nightmares, flashbacks and trauma still suffered by his young victims.

One described Brown as a “dangerous and vile excuse of man, who saw prime pickings in the innocence of children”.

Joanne Eley, mitigating, said Brown had entered guilty pleas at the earliest opportunity at crown court last month following the service of a wealth of evidence.

She added: “The offences were committed at a time when – as the defendant states – he was at a loss to explain why he did what he did.”

Miss Eley said Brown had since spoken frankly to the probation service and did not deny being sexually attracted to children.

She said Brown had sent a letter to Judge Pugh, expressing sorrow and remorse, and “wishing he could turn back the clock to right his wrongs”.

Brown will have to go before the parole board before being considered for release from jail, and once free, must sign the sex offenders’ register and be subject to a sexual harm prevention order indefinitely.

Judge Pugh publicly recognised the work of Detective Constable Elizabeth Smy by recommending her for a chief constable’s commendation for her work on a complex and sensitive case.

After the sentencing, Det Con Liz Smy thanked officers and the safeguarding team for their dedication and professionalism, and paid tribute to the victims’ families for their courage in supporting the investigation.