I had the CLK cap at 1uF (excuse my handwriting), which should have been sufficient for debounce. There should be no flash from the other LED.Ahh I see the debounce now that you have mentioned it, your circuit now works a treat, I changed the CLK cap to 4n7 & it fixed the problem, the opposing LED gives a minute flash when the button is released but I don't think this will be an issue.
Yeah, sorry I didn't think that through. You'd have to supply power to the LEDs. Maybe with the new relay there will be no problems.If I disconnect the relay contact from the supply rail I can't get power to the circuit to check it out?