Pommie-basher

Pronunciation: /ˈpɒmibaʃə/
noun
1. An epithet bestowed by the British, used for Australian sportspeople who take particular pride in achieving victory over English rivals.
2. An Australian who participates in good-natured ribbing of the English.

You know things are not quite right Down Under when Jeff Thomson, Pommie-basher-in-chief, starts talking up England's chances.

--Will Hawkes, 'Ashes Diary: Pommie-basher-in-chief turns on 'shambolic' home attack', The Independent, 03/12/2010.