High Voltage Insulator Testing. “When seeing this vertical column of tubes and knobs, I was inclined to pass it by, as it was not particularly photogenic. Remembering that many succesful pictures are the result of making an analytical examination of the subject, I gave it time. It’s fun to do this - a bit of a challenge. Rejecting many angles I was left with the one you see in this photograph. There was just room for my half plate camera to point upwards and look through the gaps. Needless to say I made sure the power was turned off!” English Electric, Stafford, 1954