Large round Crabtree plug Designer (Organisation) Crabtree Electrical Manufacturer Crabtree Electrical Date 1940 - 1949 (circa)
Wandsworth plug Designer (Organisation) Wandsworth Electrical Manufacturing Co. Manufacturer Wandsworth Electrical Manufacturing Co. Date 1920 - 1929 (circa)
Bayonet 2-bulb adapter Designer (Organisation) Ward and Goldstone Manufacturer Ward and Goldstone Date 1940 (circa)