I haven't updated any Nearmaps from their latest capture on April 19 since not much changed. But as a point of reference moving forward, this is an image from April 19th. Next update will probably be Oct/Nov.
I really don't care who narrates it as long as that person has a great voice and I can understand what they are saying. For me, the voice does not need to come from a celebrity.
Edit: I'm much more concerned with who is writing the script.