[Matt]

Quotes from the official Ofcom Broadcasting Code:

"Representations of sexual intercourse must not occur before the watershed, or when children are particularly likely to be listening, unless there is a serious educational purpose. Any discussion on, or portrayal of, sexual behaviour must be editorially justified if included before the watershed, or when children are particularly likely to be listening, and must be appropriately limited and inexplicit."

"Nudity before the watershed must be justified by the context."

The watershed is between 9.00pm and 5.30am, so as Clapham Junction was on between 10 and 11pm, I don't think it has broken any rules.