Green’s Dictionary of Slang

Alexandria, Egypt.

1953		E. Wilson Look Who’s Abroad Now 15: Riding the train back from Alexandria or ‘Alex,’ we saw many camels.
1956		A. Burgess Time for a Tiger 16: ‘I seen one fellow in Jerusalem, wait, I’m telling a lie, it was in Alex, when I went there for a bit of leave[.]’ .
1958		‘Neville Shute’ [bk title] Ice Cold in Alex.