Detex Distributors, Ltd.
59 New Oxford Street, London WC1 (1925)
110 Victoria Street, London SW1 (1926)
Detex House, Rosebery Avenue London EC1 (1928)
66 Victoria Street, London, SW1 (1930)

Detex Ltd.
161 Vauxhall Bridge Road, London SW1 (1930)

Radio and radio component manufacturer from 1925 till the early 1930s.

Both Detex Distributors Ltd. and Detex Ltd. names were used in advertisements from 1925 however their name changed officially to Detex Ltd., in June 1930. [1]

The company initially manufactured components and a permanent (non-adjustable) crystal detector.[2]

An example of their range of components from the Wireless World September 28, 1927, Page 415.

The Detex range of components includes a distinctive tuning dial giving a fine adjustment with a metal cover plate. Scale and aperture for indicating station tuning. All Detex prices have this season been reduced, the 3in. Vermo dials selling for 3s. Among the components already known are various types of break jacks, keys, and switches, a permanent crystal detector, and a two-coil holder. The new components are an HF choke and a tapped plug-in coil. The former is station wound and stands vertically from the baseboard, three terminals being fitted to provide a tapping point. Listeners within the shadow of 5GB will find Detex plug-in coils useful for improving selectivity. It is well made; the moulded plug-in mount being particularly well-finished.

In the late 1920s, they started making radio receivers starting with the Straight Five.

Other models soon followed as described below from the Wireless & Gramophone Trader, April 30, 1930, page 2224.

The Detex "Straight Five" portable receiver which, at the retail price of 8 guineas complete, has attracted so much attention since it was introduced, is now joined by two further lines which are just being marketed by Detex, Ltd., of 161, Vauxhall Bridge Road, London, S.W.1.

The first of these is known as the "Fireside Five", another 8-guinea receiver consisting of the " Straight Five " circuit arrangement built into an upright transportable cabinet with a fabric covering. The other new development is, perhaps, even more, interesting since it takes the form of the "Gramorad Five" and is an inexpensive radio-gramophone. The actual price has not yet been finally decided, but we hope that this, together with some further descriptive details, will be available for our next issue.

[1] Wireless & Gramophone Trader, Jun 7, 1930, page 275.
[2] Wireless Constructor Oct 1925, page 1135.