We have various light wells in this house, two of which are over landings, and each contains a 40w fluorescent tube, one of which is always on all night. In summer, that is perhaps eight hours, but more like eighteen in winter.
One needs a new tube, so now may be a good time to throw out the fluorescent fitting and replace with LED, but which type?
I could just remove the current fitting and replace with a bayonet type (B22) which I happen to have in the shed, then buy a matching bulb. Or some type of 1m strip, as used under kitchen cabinets or ...?