Hi Riccarton - remember one golden rule in Met:
Buys Ballotts law sates that - if you are in the northern hemisphere, and you have your back to the wind, the low pressure is on your left. Its the reverse for the southern hemisphere:
If you have your back to the wind in Oz, the low pressure system is on your right.
So on your cross country flights you will have a good understanding as to why you have to compensate for drift.
Regards my friend.
Anything else please feel free to e-mail me.
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If it aint a Boeing, then, erm, its probably an Airbus