Writers fall foul of the Child Protection Act

The Richmond Writers Circle has fallen foul of the child protection act. A youth theatre group, consisting of girls from between the ages of 14 to 17, now meet before us. The room is big. There is a platform. The girls are fully clothed. But we are not allowed to enter in the room until they leave it. Adults and children are not allowed in the same room together unless the adults have been cleared by the police.
Are their anxious parents waiting to meet them? No. How strange. It is 7.30. These girls are permitted to walk into Richmond town centre, which is seething with adults, unaccompanied by their caring parents. Most of the year it is dark at 7.30. Children can get on a bus or train, full of adults, and make their precarious way home. But they can't be in the same room as adults who have not been cleared by the police.
There must be material for novel here somewhere. A crime novel.