Stuart Hall "took advantage" of young girls after they were sick from drinking spirits.
Jailing him, Mr Justice Turner said Hall volunteered to clean them up but his intentions were 'much darker.'
He said: "You saw their condition not as a cause for concern but as an ideal opportunity to carry out acts of gross sexual molestation while they were at least partly incapacitated by drink."
The judge told him if he had committed the same offences now he would have faced a further eight years in jail but his "hands were tied."
More top news
Breezy and wet tonight as rain sweeps in from the west meaning a miserable start to Sunday morning.
BBC Political Editor Nick Robinson has revealed Labour tried to recruit him to be Ed Miliband's spin doctor in the run-up to the election.
Nasa has begun its countdown for a mission to discover whether life might exist on Jupiter's moon Europa.