The 362 Radio Valve Company manufactured valves in London from 1933, at first at the Stoneham Works in Hackney, E5. and later in the Liverpool Road, Highbury. They specialised in valves for the amateur radio market. They ceased production in 1937
I have some data and/or prices for the following types:-
ME25.
P625.
PX50 Advert 1, Advert 2, Advert 3.
RFP15 Review, Advert 1, Advert 2, Advert 3, Advert 4.
RFP60 Review - Page 1, Page 2, Advert 1, Advert 2, Advert 3.
Here are thumbnails that link directly to the adverts, which are shown in approximately chronological order, and contain some data. They are all from the T&R Bulletin between 1935 and 1937. The 362 Company did not advertise in the T&R Bulletin before 1935. The Transmitting and Receiving Bulletin was the official journal of the Radio Society of Great Britain before the Second World War.