A cub scout leader who kept diaries and photographs of the boys he sexually abused in his troop has been jailed for 10 years.
David Hopkins, 65, admitted a series of offences including indecent assault and taking indecent photographs when he appeared at Maidstone Crown Court on Monday.
The court heard how he made "meticulous" entries in his diaries about his activities while a leader at a cub scout troop near Folkestone, Kent.
He even constructed running totals of the hundreds of times he abused his victims, some of whom were as young as seven.
The cub leader, who carried out the abuse over several years up to 1989, also took thousands of photographs of his victims.
Hopkins, of Skeete Road, Lyminge, Folkestone, admitted 20 counts of indecent assault on boys and four counts of taking indecent photographs.
On Monday he admitted a further count of sexually abusing a ninth victim and was sentenced for all the offences by Judge David Croft QC.
The judge described the abuse as a "massive breach of trust".
He told Hopkins: "You chose the most vulnerable children you could find, breaching the trust of mothers or families, and that which the Scouting organisation had invested in you."