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Simplex Electric Co, Creda Works, Blythe Bridge, Stoke-on-Trent (1967)
1932 Recognising the scope for improvement in the management of its electrical subsidiaries, Tube Investments created a new single organisation to be responsible for the manufacture and sale of its electrical products, including Creda and Simplex products. Simplex Conduits merged with Credenda Conduits Co to form Simplex Electric Co which began to manufacture Creda domestic cooking appliances in addition to lighting equipment and conduits. Cookers, irons and electric fires were produced by Creda.
1933 Creda electric cooker with oven. With a cast metal hotplate-griller and a red-ring hotplate (later addition). One of the early electric cookers to be fitted with a Credastat automatic oven thermostat - patented by the Credenda Conduit Co Ltd, Birmingham 1931. Whole cooker enamelled in mottled pale grey, made by Simplex Electric Co Ltd, of Birmingham. Used daily in the donor's home from 1934 to 1967. Credastat was an optional extra on Creda cookers at this time. Inscription on oven door: Creda/BRITAINS BEST/ELECTRIC. Made by Simplex Electric Co - Birmingham
1937 British Industries Fair Advert for 'Creda' Electric Cookers; Fires; Water Heaters; Tubular Heaters; Wash Boilers; Irons; Kettles; Toasters; canteen Equipment, etc. and 'Simplex' Electrical Installation Equipment, comprising Conduits, Fittings, Switchgear, Industrial Lighting Equipment, Flameproof Lanterns, Floodlights, Mersey Cables. (Electricity: Industrial and Domestic Section - Stand Nos. Cb515 and Cb.414) 
See Creda: Cookers