VM have an API that seems to give accurate results. Someone (who shall remain nameless unless they want to be named...) has made a checker for it that is feeding this dashboard I am using, not my address pictured just a random postcode from google:
I have this as my homepage (with my address on) to easily watch for roadworks etc in my area filtered by provider. The API that feeds the VM result seems accurate, a checker for it might get pushed to git later if people want it....
MOD EDIT - picture resized to fit screens better