Is it the Bristol hum you are hearing.
https://en.wikipedia.org/wiki/The_Hum
I am in Bristol and hear it occassionally, I dont have Sky.
I think you are just over the bridge.
The Hum is a persistent and invasive low-frequency humming, rumbling, or droning noise audible to many, but not all, people in an area. Hums have been reported in many countries, including Australia, Canada, the United Kingdom, and the United States. They are sometimes named according to the ...
