OH checked the main switch and tried to flick it back but wouldn't stay. We then took every plug out of every switch, lights were back for only 2 mins. Then I suggested that we take off the bulb that's the newest. This was in the front room this bulb also had high power and was probably not recommended for this light fixture. Switched back on the mains and all downstairs lights worked. Woke up this morning to find they ain't working again. What could it be? What should I do? Are electricians avaliable atm? Should I just take out British gashome care cover?