Sentence:  He rails against political correctness and health and safety regulations, and earlier this summer was accused of calling Gordon Brown "a <WSD>cunt</WSD>" in unbroadcast comments to his Top Gear audience, whom he has also referred to as "oafs". 
Meaning of the word marked with <WSD> tags:  An extremely unpleasant or objectionable person (in US, especially a woman; in UK or Ireland, more usually a man).