Lightbulb moment...

No flash of inspiration to report on this morning, just that when I arrived at Ms J's front door to pick up her list and shopping bag she was standing in semi-darkness...so a quick removal of a defunct bulb from her ceiling and a brief diversion into the hardware store on the way to the world's politest supermarket to pick up a replacement and upon my return light once again shone brightly above Ms J's head, and all was good in this little corner of Camden.