ET Enterprises Ltd.

ET Enterprises is the photomultiplier and associated products business of Electron Tubes Limited, formerly EMI Electronics Electron Tubes Division. The company's manufacturing and development facilities are located in Uxbridge, which is about 30km west of London.

As a subsidiary of Ludlum Measurements Inc. (LMI), ET Enterprises distributes the ADIT range of photomultipliers outside the US.