I own a property which has a neighbour at the far end of the property. The access road to my property ends at the entrance of my property. The neighbour's plot is land-locked. His property is marked as a no-development-zone property as it touches a steep cliff and continues below the cliff from where he has access. However, it is not possible for him, from this access, to reach the part which touches my plot because of the steep cliff. His part on top has a widdth of about 10 meters only. If I need to give him access, the access will run through my entire property (several hundred meters in length). Am I required to give him access? At what rate is he required to pay for this access?