Hello, Has anyone else noticed an intermittent whistling / high pitched noise on the junction between Landcroft Road and Crystal Palace Road? It goes all day and night and the 'whistles' are of varying length between 5 to 20 seconds, occurring every 3-5 minutes. I called noise disruption services at Southwark Council and they were very quick to come out and take a look, but also couldn't identify it. Driving me mad and affecting sleep! Thanks