Richard,
Belated thanks for the several posts and the alert for BTN.
Afraid I was away from the computer then, and until after the US close.
However, I will check it out at leisure now in retrospect and use it as part of my education.
Many thanks,
BTW, I've just started using my old IG account again after some time, and I believe their advanced charts (or something!) has some sort of stock-screening facility. Didn't take much notice first time I noticed it, as I wasn't doing stocks at the time, but will look into it now. Don't supposed it's as advanced as specialised stock-screening software that you pay more money for, but something to get going on.
Best wishes,