Scott-Taggart , Editor of "Wireless World","The Wireless Constructor" and other publications, had issued a number of construction envelopes for amateur use. Some were offered as kit by different manufacturers.

Scott-Taggart also offered a range of some 11 valves/tubes which were almost certainly made by another company. Advertising emphasised that they were invidually tested and approved and in the first years a certificate was issued personally signed by Scott-Taggart.