I grew up close to the Aladdin factory on the A40 through the 60's and into the 80's, and if it was windy, you could certainly here the IAF Connie's when visiting Northolt.
Later in the 80's I worked with an older chap that was living in South Harrow at the time of the Connie almost taking the top off of the Harrow-on-the-Hill spire, and never forgot the noise of that Connie at low level over his house......a story he would often tell over lunch at work.
My late father as a local copper watched the Pan-Am 707 take-off from Northolt, from his Police car parked up on the A40.