Roberta & Noddy, thank you both for your concern.
Yes, my power was restored by 9:30 (am), but what drama getting to that point! I got my electrician out of bed at around 7 am, poor man, & after babbling onto him about the situation, he came to the conclusion that most likely there was a leak in the roof (over my kitchen) & what I needed was to fix that, then most likely the problem would fix itself. (Very kind of him to advise this way as it saved me considerable $$$) So B, my trusty handyman, arrived at 8 & after checking a number of possibilities, ended up fixing the roof. (In the rain.). We discovered that during the heavy downpour the night before, that water had leaked into my ceiling & was running down the light cord

.... which caused the safety switch in my power box to turn off all the electricity in the house. (Thank god for the safety switch! Phew!) We then used my hairdryer to dry the socket before replacing the globe. I felt as though I'd done a full day's work by the time he'd left.

So peace & light & warmth have now been fully restored.