I know it's south of London, but Elgin Country looks posied to add another roundabout. The current clusterfuck that is Wonderland - Ron McNeil Line - Highway 3 is being realigned into a more coherent roundabout. Interesting the EA references the seemingly dead Highway 3 - St Thomas Bypass as more than a dream and potential long term solution.
EA - Design Concepts https://cardioid-bellflower-dxsx.squarespace.com/alternative-road-alignments