If I were you, I wouldn't be too hasty, since it's pretty unlikely that the wiring, per se, is causing this problem.Hi John I did after the event and they work fine. I have just checked some of the cable connections and the energy saving bulb seems to be more pulsing than flashing whilst yje conventional bulb is fine. I think the best thing is to rip out the wiring and starting again. It could be there has been an issue not noticed becuase we always had a conventional bulb until now.
Kind Regards, John