Dudez,
I went out and brought a NTSC to PAL converter, plugged it in and bingo, no colour at all!!!!!
Took it back a brought a PS2/Scart connector, plugged it in the RGB SCART in my TV, and its been working flicker free for about 15 minutes now (fingers crossed

)
thanks for the advice guys, I should have listened harder
Ciao
Speedy.