The searching policy is on the internet
here
body cavities will only be searched by medical personnel. And only with consent, and only in the case of clinical need (not for searching purposes).
Men can be asked to sqat, in order that their genital area be examined. Women should not be asked to squat.
I think it also says that both of the officers must be the same sex as the offender.
That said, the whole treatment of female prisoners, the rate of mental health problems, the self harm rates in prison, etc., etc., are of real concern, and a femanist issue.
May start a seperate thread when I have more time (and am not about to go on a teleconference).