Nice twisty road with not to much traffic and plenty of other road options at start and end.
From the central roundabout in Newmarket go East along Old Station Road and then turn left at the Ashley Road T junction. You are then on the B1083. This goes through hilly country, with enough straights to give you time to notice the scenery but principally a succession of moderately tight, but not extreme, bends. The mix of straights and bends is unusually good, and this is a well-liked road by riders of all standards. Go through Ashley Green, Lidgate and Wickhambrook (where there is a biker-friendly pub - The Greyhound - unfortunately just off this route) until you come to the A143. Turn right onto this towards Haverhill and almost immediately find the Hard Times Cafe (very popular with bikers) on your right.
The tourist route to Manningtree, quite a nice if short run in Essex, it starts off quite blind and tight, then it opens up with a few nice corners and good visibility. Also easily accessible from Harwich where you can take the ferry to or from Holland.
Lovely roller coaster of a road, especially after West Bergholt. The good bit starts with a long, long straight followed by the forementioned roller-coaster. One or two villages with 30mph limits and Bures itself (follow your nose through the town, left after the bridge). Have been told by the locals to be careful of gravel on corners, washed down after heavy rain.
The B184 is a great favourite with local bikers. The section between Ongar and Leaden Roding is twisty and technical (particularly around Abbess Roding). After a brief right and left on the A1060 the road continues after Leaden Roding to include a fast section up to Dunmow. From there up through Thaxted to Saffron Walden is a series of sweeping bends, with just a few sharp ones to keep you on your toes. At Dunmow and Thaxted you can also turn east to get into the area of excellent biking roads around Finchingfield.