remember that Mitchell and Webb sketch where a nazi ss officer slowly realises that they're the bad guys?
Are we the bad guys now? we support some awful regimes across the world, the latest "friend" being Libya - who's crackdown on protests is sickening, hopefully we wont try and worm out of condeming Gaddaffi just because he's got oil will we? or is that the sum total of our cares in the 21st century? dealing with tyrants in the hope of securing the last few drops of oil or because we're scared of letting other people have democracy? jesus christ - we suck 
Throughout English / British history there have been many times BJ when, for reasons of political expediency and diplomacy, we have been "the bad guys". When it suited us we have drawn up alliances with all kinds of dubious leaders and their nations when it suited our leaders of the time.
Richard I (The Lionheart) made an alliance with the French to launch the First Crusade (1191), although the French had been England's enemy, and was again later for centuries to come. Fast forward through many "alliances of convenience" and we found the Germans were our Allies against the French in 1815, and rescued the Wellington's army from certain defeat at Waterloo. Yet we had an alliance with France by 1914 to assist them if under attack, and entered a ruiness war with Germany when they did attack France! We had an alliance with the USSR, and worse of all Stalin, to assist them in their war against Nazi Germany, who had originally a non-aggression treaty with Hitler and Germany, a most strange collection of bedfellows that proves not only has Britain entered into doubtful alliances!! Do not forget we had also signed an agreement with Hitler of Nazi Germany in 1938 in the interests of peace, yet giving the tyrant a free hand in Czechoslovakia!
We were the bad guys wwhen dealing with the Palenstine situation in 1947, and the British has so often protected diplomatically Israel. Britain was definately the bad guy when starting the Suez conflict in 1956. We also did nothing when our "best friend" was carpet bombing Vietnam in the 1960s.
So BJ, yes we have often been the "bad guy", and I suspect that we will continue to be from time to time.
I will never forget the quote of Churchill whilst at, Chequers, in June 1944 asking "Are we the beasts? Have we taken this too far?" (Gilbert, M.
Churchill A Life p.517 (1993)) when he had watched a film about the effects of the intense Anglo-American bombing raid on the industrial city of Wuppertal, with 3,000+ German civillians killed. This to me proves that Britain does question its own actions as a leading democracy does, and highlights that overall we are the good guys!
