Aye cheers mate, I knew it would be no good, just not really messed about with fuel lines much before. I'm guessing to drain it from the pipe at the fuel rail as said in this thread -
http://www.toyotagtturbo.com/forums/showthread.php?85658-ep82-draining-fuel-tank
I live next to a garage so it's no bother getting petrol with the car stationary, if it's easier just to fill it up.
Gonna need to change all the engine oil as well before starting it up again I think.