When I first arrived in London I used to lay in bed at night with a small radio, tuning around listening to the many stations there.
In between the strong signals on the FM band there were lots of very weak stations, which I found out later on, were either independent or pirate radio stations.
They were all playing this stuff. I had never heard it, but I loved it.
Jump forward a couple of years - Fabric Club - I'd always end up in the room playing this stuff.