This is a list of town tramway systems in the United Kingdom divided by constituent country and by regions of England. It includes all tram systems, past and present. Most of the tram systems operated on 4 ft 8+1⁄2 in (1,435 mm) standard gauge (SG) or 3 ft 6 in (1,067 mm) track, although there were a small number of other gauges used. Where known, the track gauge is indicated in the 'Notes' column. Most of these systems have closed, but a list of the remaining systems can be found at list of trams in the United Kingdom.