Mathew Campbell faces court charged with child sex abuse offences as pedophile Jadd Brooker admits to 141 more crimes

The identity of another man allegedly part of a shocking SA pedophile ring can be revealed – as its vile mastermind is confirmed as Australia’s worst child predator.

The last man charged with being part of HIV-positive pedophile Jadd William Brooker’s online child exploitation ring can finally be identified.

Mathew Campbell faced the Adelaide Magistrates Court on Monday charged with nine child abuse offences.

Half an hour later, Brooker himself faced the same court and formally pleaded guilty to 141 crimes against children and teenagers, both in Australia and overseas.

Following the consolidation of all the allegations against him, Brooker has admitted 182 crimes in total – cementing his status as Australia’s worst-ever child predator.

After Brooker’s confessions, another alleged member of the ring – Leon Ronald Scarffe – faced the same court.

His appearance ended quickly, however, with his lawyers saying they could no longer represent the alleged child blackmailer due to “a conflict of interest”.

Mathew Campbell leaves Adelaide Magistrates Court where he is facing child exploitation charges. Picture: NCA NewsWire/Brenton Edwards

Mr Campbell, 38, of Salisbury Park, was arrested in May and charged with two aggravated counts and seven basic counts of producing child exploitation material.

His arrest followed those of former political adviser Benjamin John Waters and senior Correctional Services worker Stewart Iain Berry.

Scarffe, 51, of Mitchell Park, was charged with offences including persistent sexual exploitation of a child and blackmail.

All four were arrested due to investigations into Brooker, 39, of Glenelg East, and an alleged pedophile ring that police claim involved more than 10 people.

On Monday, police prosecutor John Mattner asked Mr Campbell’s case be delayed so it could be merged with the allegations against Mr Berry.

Jadd William Brooker is Australia’s worst child sex abuser.

He told Magistrate Simon Smart that Mr Berry’s case had been moved to the Port Augusta Magistrates Court “through an anomaly of the system” and should be heard in Adelaide.

“Mr Berry should also be charged with some of the same offending that is alleged against Mr Campbell,” he said.

“Mr Campbell was the last person arrested out of all of the accused … Your Honour will be aware Waters is already in the District Court … that late arrest has caused this delay.”

Mr Smart, however, said that was no reason to delay Mr Campbell’s case for an extended period and ordered he answer the charges in three weeks’ time.

He remanded Brooker in custody to face the District Court in January, when a date for sentencing submissions will be set.

Prosecutors are expected to ask the District Court to declare Brooker an uncontrollable sex predator and jail him indefinitely, using legislation championed by The Advertiser.

Mr Smart also remanded Scarffe in custody until December, in order for him to obtain new legal representation.