No special access issues
From the parking (marked on the map) on the west side of the mountain (left side of the road just before the bridge) follow an old track up the hill keeping the canal to your right. At the highest point of the path the track becomes much better leading down to the wall. The far left sector comes just after the highest point. For the main and right sector follow the path down to the water and walk along the rocks up to main or along the "beach" to left.
Walking along the water from the campsite is possible, but not recommended due to the amount of trees and bushes.