What a marvelous night for a moonwalk!
They are all doing it to support breast cancer charities, a cause very close to my heart. If anyone is moved to support the cause, they can do so either on the Moonwalk fund of a work colleague who was doing the walk: here, or on my fundraising page: here.
I was on my bike and tried to get as many photos as possible, so that people on the walk, albeit a minute fraction, might have a record. The full album (137 photos) is here. Three short (and not particularly good) videos of the start (green and orange starts, I think) are here here and here,