This tweet from @robleathern that I saw in my feed this afternoon got me thinking about the buildings where my first job was located.
So, I thought I’d try to find out what the building was used for today, and even see if I could get a photo. That actually proved difficult, even though the buildings it was part of are in fact pretty historic having been the place where a number of very significant inventions were created.
I started as a trainee in the year between graduating from secondary school and before starting at university. For that year, I was to be working at Thorn EMI in Hayes, Middlesex. The first six months were in the training department, located in Vulcan House, the remainder of the year we were split into different divisions of the company, but my assignment was to Radar Division, based in the nextdoor building, Mercury House, in Hayes.
This is the best photo I can find online for the entire site:

If you look in the lower left corner of the highlighted area, the thin building right on the boundary is Mercury House; the larger, square footprint building next to it is Vulcan House.
Right now it looks as though they either have been, or are being, converted into something called the Old Vinyl Factory, but several pictures I found online seem to suggest that both of these two are somewhat derelict now (Thorn EMI moved out of the site in the early 1990s, and we were relocated to a site in Crawley that is still in use today, although under different ownership).
I mentioned that they were somewhat historic. Before WW2, the buildings were on the cutting edge of audio recording technology. Alan Blumlein, the inventor of stereo sound recording, worked in these buildings, and the very first movie with stereo sound was shot from one of them, looking down at the railway lines alongside the site (which were still there while I was there, but no longer with steam trains!). The buildings were also home to a lot of the early development work on television, with Blumlein listed as an inventor on several TV-related patents. Pretty significant stuff, but perhaps the more significant work was still to come.
As Europe was embroiled in war, the same people shifted their focus to other technology, including the development of radar, which was so critical in the defence of the UK. Blumlein was a key developer in the top secret airborne H2S Radar system project. Sadly, he was killed in a plane crash while testing the radar in 1942; just imagine what we could have achieved otherwise. At the time, some thought the H2S project would fail without him, but it survived (and in fact was still in active use as recently as 1993). Additionally, some of his early radar-related inventions are still in use in modern radar systems.