21. In any proceedings relating to an offence, where a court is satisfied that—

(a) the nature or circumstances of the case are such that there is a need to protect a victim of the offence from secondary and repeat victimisation, intimidation or retaliation, and

(b) it would not be contrary to the interests of justice in the case,

the court may give such directions as it considers just and proper regarding any evidence adduced or sought to be adduced and any question asked in cross-examination at the trial, which relates to the private life of a victim and is unrelated to the offence.