UKASTLE, United Kingdom Association of Streetlight Enthusiasts, Street light, collector, street lighting collection streetlight, street lighting, discussion forum, discussion, mercury vapour, SOX, SON, Metal Halide, Fluorescent, Low Pressure Sodium, High Pressure Sodium, GEC, Eleco, Philips, Thorn, Revo, WRTL, Siemens, Bleeco, Phosco, Phosware, A C Ford, AC Ford, Venner