For those Britishly Challenged folk among us (from [url]http://www.peevish.co.uk/slang/index.htm[/url]):
[b]smarmy[/b]  Adj. Obsequious, condescendingly flattering. {Informal}.  
[b]lager lout[/b] Noun. A young person whose anti-social behaviour is primarily instigated by the excessive drinking of alcohol. {Informal}
[b]woofter[/b]  Noun. A homosexual, a variation on 'poofter'. Derog.  
[b]sod[/b]  Noun. 1. A despicable or objectionable person. Derog. 2. A pitiable person.  
[b]pillock[/b]  Noun. Idiot, fool. Originally a slang term for the penis but fairly inoffensive now its this meaning has been forgotten. Derog.  
[b]grotty[/b]  Adj. Nasty, unpleasant, shabby, of poor quality.  
[b]plonker[/b]  Noun. 1. A penis. 2. Fool, idiot, a despicable person. Derog.  
[b]gormless[/b] Adj. Lacking sense, foolish{Informal}.
[b]tosser[/b]  Noun. An idiot, a despicable person.  
[b]ponce[/b]  Noun. 1. A despicable person. Derog.
2. An effeminate male. Derog.  
[b]poofter[/b]  Noun. 1. A homosexual, usually male. Derog.  
[b]piss-head[/b]  Noun. A drunkard, a habitual drinker.  
[b]cock-up[/b]  Noun. A mess, a shambles. Verb. To make a mistake, to ruin.  
[b]prat[/b]  Noun. A fool, idiot or objectionable person. Originally meaning the buttocks. Derog.  
[b]naff[/b]  Adj. 1. Rubbishy, useless, of poor quality. [1960s]
2. Unfashionable. [1960s]

I didn't find all of them.