Ealing Common is a junction in West London. It lies on one of only two remaining single carriageway sections of the North Circular Road.
There have been at least three proposals to dual Hanger Lane and Gunnersbury Avenue over the years. The first was in the early 1970s where the A406 at Ealing Common would have a wide central reservation to allow a future flyover or underpass to be added turning the junction into a diamond. The north facing slips would have continued northwards to include Madeley Road/Queens Drive as another diamond. Orders were made for this scheme but was never carried out.
The next proposal was made in the late 1970s/early 80s for an at-grade dual carriageway with an enlarged signal controlled junction at Ealing Common. This scheme also never succeeded.
The final proposal followed a similar line to the original early 70s scheme but was to be in a tunnel beneath Ealing Common for environmental reasons. The south facing slips for the A4020 would have been at Elm Avenue necessitating a rather roundabout route for this traffic. Orders were made for this scheme in 1992 but were revoked a few years later.