The Norfolk stage can be found in full & broken down into sections
here .
Press release
here , from which:
"The financial backing to host the race has been provided by the County Council, but five of Norfolk's district councils along the route (Borough Council of King's Lynn and West Norfolk, Broadland District Council, Great Yarmouth Borough Council, North Norfolk District Council, Norwich City Council) have also pledged additional financial support to help stage the event" seems to support this:
more detailed maps and routes usually become available nearer the time
I wonder if on the more detailed maps they'll discover that they've missed off half of the country ?
I think that a large part of the route selection is that they rely on funding from regional bodies so that whoever pays to fund a stage gets a stage. I know there's been criticism among riders in the past over the length of transfers involved between stages, but I gather it's essentially down to funding
The Norwich section is very close to work: I think the Grapes Hill footbridge might be a good vantage point, particularly as that's where the third Sprint of the day will happen. Alternatively, Gurney Hill over Mousehold Heath is a KoM point.