I have the same problem. Three routes now available between Newhaven and Lewes.
1) The A26 - narrow, lots of potholes right across the road, very busy, lots of lorries.
2) The C7 - narrow, lots of potholes on the edges of the road, very busy.
3) New shared use path by the river (Egret's Way) -...
As someone who drives 20,000 miles a year, but only cycles perhaps 500, I would love to know why some drivers who don't cycle get so wound up about cyclists. I really would. I can't say I've ever been held up for more than about 30 seconds by a cyclists, but am held up by divvies driving at...
They don't. Only polluting motor vehicles used for transport from A to B do. Not low emissions vehicles, electric cars, agricultural vehicles, cycles, horses, pedestrians, etc.