The hedge on the west side cut from the bamboo to the deck ~30m, ~2.5h including clearing up. Top cut to ~2.5m. We'd let it grow to block the view of the new house next door, but it's over 4m in places.
I'll need to go back once the blackberries have fruited and finish the last 10m, plus the far side of the top of the hedge.
8/10 4 hours spent cutting the rear portion of the hedge to ~2.5m. 4 trailer loads.