Not quite - while the lights were there they never worked.That's how it used to be.
This is Google Street View in 2009. If I recall correctly the bagged up traffic lights used to be for a right turn arrow, and were linked to the operation of the crossing lighhts.
https://www.google.co.uk/maps/@51.4...e0!5s20080601T000000!7i13312!8i6656?entry=ttu
According to this Web Archive leaflet from Merton Council in 2010, about installing the current arrangement, they proposed "To remove the set of traffic lights at the junction of West Barnes Lane with Burlington Road, which were installed more than ten years ago and have remained non operational since." You can confirm that from historical satellite pictures from before 2010, since the road markings that lights would have needed were never applied.
Without the markings, it's hard to work out how those lights were meant to work. From later Merton council minutes, it appears they put in the lights in 1999, based on some agreement with Railtrack. By the time the latter were subsumed into Network Rail, the resources to make the link with the signalling had never been allocated. Network Rail to start with made encouraging noises, but for some reason never made any progress either. Someone may know what was behind that. The original plans from the 1990s don't appear to be on line; it's a bit too early for that.