OK if you can get yourself to the B269 coming out of Croydon? Follow this road under the M25 and through the staggered junction across the A25 (its a left then a right 150 yards later to stay on the B269)
Stay on the B269 until you get to a village called Crockham Hill. Pick up the right fork for the B2026 towards Edenbridge
Straight on through Edenbridge, past two railway lines and across river. Straight on at roundabout after river.
About half a mile out of Edenbridge, turn right for the B2028. (This road will take you most of the rest of the way)
After about 5 miles you'll reach Lingfield, under the railway line and past the racecourse (on your right) You'll then need to make a left at a mini roundabout to stay on the B2028
After Lingfield you'll reach a roundabout for the A22. just go straight on, straight across another crossroads and straight on at another roundabout. Just stay on the B2028.
Stay on the B2028 straight through Turner's Hill and Ardingly
Stay on the B2028 into Haywards Heath. When you get to a roundabout, take the first exit for the B2112.
Straight on at the next roundabout and stay on the B2112
Out of Heywards heath and into Wivelsfield (branch right at rounabout to stay on B2112)
straight on at next roundabout, and on into Ditchling. Straight on at crossroads.
After the crossroads, the B2112 swings right, but you want to go straight on, over Ditchling Beacon and head for the sea! Enjoy!