Your flippant regard to sexual abuse is rather worrying

And yes of course, if someone has broken the law and ''gave him a little bit of a personal tickle''

then absolutely they should be investigated!
The amount of time that has passed is utterly irrelevant and provided the crimes can be proven beyond a reason of doubt then personally I think they should be punished with the fullest extent of the law, celebrity or otherwise!!!
From the articles I have read the individual who is making the initial accusation against cliff contacted the police during the whole Jimmy Savile revelations