[emeritus]

I remember that my uncle's flat had a pygmy-sized Osglim bulb as the pilot light for his 15A kitchen socket, providing an end-on view of a glowing round disc. A pity I don't have a photo: it was a large wooden board with a massive switch, underneath which, flanked by two fuse holders, was a BC batten holder with a HO skirt containing the Osglim, and under that the 15A socket itself. Our flat was upstairs with an identical arrangement, and as, unlike the downstairs flat, we had no electric light in the kitchen, a 60W lamp was fitted to provide illumination rather than an Osglim. A red pygmy should do just as well.