If coming from a commercial background you must have an Airbus or Boeing rating and experience with 3000 hours, 1000 on type.
If coming from a military background you will need to have 3000 hours which should include at least 1500 hours Fast Jet or heavy experience.
You must hold a current Class one Medical and a full JAA ATPL licence (UK issue).
You should be able to demonstrate a high level of fluency in English (ICAO level 6 English Proficiency).
Finally, you should be able to swim a minimum of 25 metres continuously, unaided.