The trial heard that witnesses had felt unable to come forward because of Souter's high standing in the community.
Souter told the trial that one witness, who claimed he was forced to ask the presenter to stop touching him, owed his later career to his influence and contacts.
Prosecutors also told the court that possible offences committed by Souter abroad, including in Spain where he has a home, had been reported but could not be tried in the UK.
Head of the Crown Prosecution Service's complex casework unit for the East of England Chris McCann said:
"Michael Souter is the classic example of the predatory paedophile who devoted most of his adult life to grooming and abusing young boys while maintaining a facade of the utmost respectability.
"Mr.Souter presented himself to people as a local celebrity from radio and television, happy to be involved in charity events, the Scout movement and as a youth mentor for Norfolk Social Services.
"All this was a smokescreen to hide his true intention: to become close to young boys so he could sexually abuse them, confident that his celebrity status would mean they would not be believed.
"This is the tactic of the classic predatory paedophile who hides behind a facade of respectability to carefully select and groom his victims then subject them to repeated sexual assaults over a period of time."
Detectives are investigating further allegations of abuse against former BBC radio presenter Michael Souter.
Mike Souter was a former radio presenter who revelled in his contacts with the rich and famous but had a dark secret.