Hi geordiemick, I’ve ridden round that way, while staying at my folks place in Sheringham . I checked out the footpaths and bridleways, and came up with a route. This maybe a little vague, but when leaving Sheringham you can take a bridleway that take you over to a wood on the way to Little Sheringham and up to Sheringham Park following the paths through there and down and across the road to the coastline, by the golf course and up a steep climb. Then I headed back into Sheringham but the coastal path runs for ages in both directions. I also went to Keeling Heath, good for a fast hack around, you can park up at a caravan site but I forget the name.
Hope this is helpful
Steve