N Na Na, Hey Hey , Kiss Him Goodbye - Originally a one-off hit for the American group, Steam.
Absolute Tivoli classic as "Na na na na, Na na na na, Hey hey hey, Trevor Phillips!" ... or Womble. Difficult to think of many songs from the Tivoli that could top it.
Additional -Just checked out the original version, the Supremes version, and the Bananarama version. All tuneful in their own way, but can't match the sheer intensity of the song as sung on the Tivoli!