Naturally, as censorship is the subtext of many, you need to be aware that some will contain strong language and/or explicit imagery, so consider where you're viewing any of these, being mindful of younger students in particular.
I did a simple 'BBFC' search on YouTube; I've only looked at the first few results pages (so far) - if you come across any useful additions, please pass on the link as a comment.
Interview with a BBFC 'Examiner'/Censor
The BBFC's use of language is questionable, and Foucault/Fairclough would certainly recognise their attempts to control and define the discourse through changing the 'C' to classification from censorship, and re-naming censors 'examiners'.
Anyway, this is an interview with A BBFC 'examiner', Emily Fussell. Awful sound quality, and I suspect the nervous interviewer was kicking the table, thus the intermittent loud banging noise!
She uses the example of Rocket Man where a kid climbs into a washing machine; this was cut for potential 'harm': fear of copycat behaviour. Even when looking at adult material "we tend to look at things that might be harmful to children". PG roughly aimed at 8 and upwards. "We did consumer research and discovered people didn't understand the term 'mild peril', so we don't use that term anymore."
"Its very much about labelling things, not telling adults what they can and cannot watch. From 2001 we had published guidelines, and now explain our decisions. "There was no 12; Jaws these days would be a 12" (on Jaws as a PG; similarly with Temple of Doom).
History of the BBFC Part 1
There doesn't appear to be a part 2; a fellow busy Media teacher created this.
There doesn't appear to be any audio; still images and text only - this might be best viewed fullscreen and using the skimmer function.
'Ramblaholic' on Tesco withdrawing a DVD (Hospital) after complaints
A talking head vodcaster, he's not as libertarian as the MelonFarmers site, but still largely critical of censorship.
You can also find him here having his say on a 2014 BBFC report which suggested a tougher regime for horror.
VSC's BBFC and PEGI Training Video for Retailers
Another great example of the impact of digitisation! The BBFC have been increasingly open and made much more publicly accessible ever since James Ferman eventually stepped down, but I don't recall seeing this on their site!
Die Hard With a Vengeance (2009): The cuts to receive a 15
Cheshire Cats Studio: BBFC/MPAA/Bechdel Ratings are ... bad
Some strong language used.
I've only skimmed this so far; a panel discussion largely presented as a Flash animation, and clearly not in favour of the ratings systems! With 21k views, another useful example of the impact of digitisation?
GoAnimate Video on the classifications
Haven't viewed yet...
Video Nasties 1hour doc