Escape via niqab

A pretty remarkable story in The Times about how a British man wanted for murder was apparently able to leave the country by wearing the niqab:

One of those who was wanted for this murder — Mustaf Jama — is believed to have fled Britain in the days after the shooting, disguising himself as a veiled woman. His brother was one of five other men left to be tried and convicted of murder or manslaughter. Jama was able to sneak on to an international flight at Heathrow dressed in a niqab despite extensive publicity about this murder....

While it is compulsory for those wearing the niqab to be examined (by a female immigration officer if that is what is preferred) when they enter this country, arrangements appear to be far less stringent if a woman (or in this dire incident, as it transpires, a man) is leaving a British airport, even Heathrow. According to the Immigration Act 1971, the authorities “reserve the right” to look at those who wear the veil, but it is not a legal obligation. In theory, the airlines should authenticate any passport photograph both as a passenger checks in and at the boarding gate immediately before departure. In practice, though, most companies are reluctant to make what might be considered an insensitive demand of people who are their customers, particularly on routes where it is common for those travelling to be fully covered.

I wonder what the equivalent rules and practice are in Australia.