[James2001]

I remember watching T4 shortly before C4 lost the rights to Friends. They used to trail the next programme before the break using a short clip taken from it. The next episode was "The One with the Cake", and the clip they used included Rachel saying the word "penis". But funnily enough, the actual programme had that bit crudely cut out!

As I said, the same thing happened with the Trash or the Titans episode of The Simpsons.

Clearly T4 themselves were using uncut copies of the episodes to make those trailers rather than the edited broadcast copies.