In reply to wurzelinzummerset:
Access to Battleship is best done via the new 'secret steps', follow the tarmac footpath from the lower end of Reap Lane, turn right at the industrial estate and follow the fence. At the cliff top turn left and walk about 50 metres to where the ground drops away a bit to find the steps, they cut back and go through a defile in the rock.
There is another path into Battleship/Veranda further south but I don't recall the details.
For Blacknor central/south/far south go down through the quarry entrance a couple of hundred metres south of the big round house on the cliff top. For Blacknor north take the route that starts about 100m north of the big round house on the cliff top, opposite the clifftop quarries. Both of these routes are largely unchanged for at least 15 years I think.
The only thing to avoid is the Northern most battleship routes as mentioned the ground has dropped away, it's pretty obvious when you walk to it from Battleship, anything past Keyboard Wall has no path below it!