As others have said you probably need expert advice (at least initially) and have a look at the link haughtney1 provided.
That said if you're in a flying job it may be possible to
reduce your exposure to UK tax, even if you are UK based, provided you spend a significant amount of your duty time outside UK airspace.
BTW this might be of use
http://www.deloitte.com/assets/Dcom-...ickerGrace.pdf