Interesting if quite lenient feature from a writer invited into their offices. He mentions Sweet Sixteen ... but doesn't appear to have asked about anything as awkward as this.
So, a bit of a puff piece but some very useful details and context.
Sex, violence, f-bombs and randy sausages: a day inside the BBFC https://www.theguardian.com/film/2019/jul/16/bbfc-british-board-film-classification-sex-violence-fbombs-randy-sausages?CMP=Share_AndroidApp_Blogger