Abstract: According to a first aspect of the invention there is provided an electrical distribution system (1) comprising or including an insulating track (4) for insulating an electrically conducting track (5) connectable to an electric power supply, one or more electric power take off sockets (2), each for receiving in electrical contact therewith an electric plug when inserted therein, characterized in that the or each socket (2) has electrical contacts (48, 49 and 50) engageable via a push fit with a slideable carriage (23) electrically connectable to the electrically conducting track (5) and being adapted to slide therealong, and locking means (32, 33) whereby the or each socket may be selectably locked in place along the electrically conductive track, thereby to position and re-position as required said the or each electric power take off socket.