Music for St George's Day Assembly

[Lotstodo]

I'm a teacher in a secondary school and I have to present an assembly (my first) on St George. I'm trying to think of suitable non-hymn music to have as the students enter assembly and leave. It's got to appeal to the age group 11 - 18. I'm clueless and would be grateful evermore for any help.

when the going gets tough

Dam busters?

Something from WW2 (tipperary, pack up your troubles)?

umm War is Mars from the Planets (I think - I mean Mars is the God of War)

Something too do with Dragons (possibly not Puff tho')

England Football anthems?

Jupiter from the Planets Suite

Nimrod (to leave to)

Jerusalem? Something by a great English rock band (there are plenty to choose from) or perhaps the Kaisers since they have just released an album and may appeal to the age group.

Sorry, just re read and saw the non hymn bit.

Nimrod

Local folk songs?

Round our way I might go for John Barleycorn Must Die or Arise and Pick a Posy

But I can imagine a lot of faces...

The American national anthem tune was wrirten by an Englishman. Or it could have been a Welshman, I'm not sure now.

Land of Hope and Glory.

Oh I do like to be beside the seaside.

Loreena McKennit - Greensleeves
Chris de Burgh - Rose of England
Steven McDonald - Boadicea
Folkearth - Remember Hastings

Thank you all for your help. As it is my first assembly, I think I'm so nervous that I just can't think straight anyway.