The former Lincolnshire police officer and Spalding scout leader was convicted on Thursday of 16 charges of indecent assault and two charges of indecency with a child, dating back to the 1970s and 1980s.
The judge praised the bravery of the victims and the sensitivity with which Det Sgt Tim Wilkinson, and Lincolnshire Police Emerald Team, handled the case.
After the hearing, Det Sgt Wilkinson said: “He has never admitted his offences. It does not seem to have registered with him what the effect of his abuse has done to these people. He abused so many people who trusted him.”
“It is thanks to the bravery and strength of the victims in this case that we could be here today to see Bates handed a significant custodial sentence. We will do all we can to bring a case to court. I hope this shows people who have suffered abuse that they should come forward – we can help. Nobody should ever be allowed to get away with this.”
Bates will serve up to ten years in prison and a further ten years on licence.