Thanks MO Quad,
The problem I have, is that I have this issue posted on a couple of other forums- and am getting suggestions from folk - well, with too much time on their hands!
I need to figure whether there is a fault- or I am doing something wrong.
Quadcopters UK, from whom I bought, have been good as gold. Send it back and they will sort it.
BUT- if it turns out to be something I have missed- it' all chargeable. [Seems fair]
So I'm going right back to square one, manual in one hand and recheck Every Thing.
Last question for you [maybe]- with IOC off & switched to GPS, is that 1 or 2 green flashes you are getting?