The same site that posted a new set report for Harry Potter and the Prisoner of Azkaban also has some new call sheets, one of which clearly identifies an extra playing Charlie Weasley as Alex Crockford, in the Weasley's Egypt family portrait published in The Daily Prophet:
Three "Arab Guides"
Two male tourists
Two female tourists
One "camel handler"
ALEX CROCKFORD - CHARLIE WEASLEY - costume/make-up/hair fitting
To see the rest of the call sheets, visit HP4U.co.uk.