The show mostly uses crude British swear words and slang terms such as "Wanker" and "Prick", but other words eg, "Bastard", "Bitch", "Cock", "Shag", etc. Are also used very frequently.
"F*ck" is never actually said on the series. All instances of it being used are humorously cut off. The only time it was actually used in the series was two instances of it being mouthed out.
The C word is almost said twice but comdeically cut off.
3 mouthed uses of "f*ck" the rest are comically cut off and the word is never heard.
Few cut off f words. One where Victor is about to say it to ISA before the lift doors open. And one is actually said, but it's in silence as victor and jack pay for petrol, and see the price, and say the f word in shock, but it's got music over it, you see them mouth the words.