Casualty has broken broadcasting rules with a swearing blunder, which has led to some viewers complaining to Ofcom. Ofcom, the government-approved regulatory authority for broadcasting and telecoms, has upheld a complaint about the BBC medical show. It ruled that Casualty had the "most offensive language" on daytime TV after an episode on June 12, when the word 'fu****g' appeared on the subtitles on TV channel Drama at 10.00 a.m.