The Access to Neighbouring Land Act 1992, also grants legal right to the neighbour to access to their neighbours land for necessary repair works. The Access to Neighbouring Land Act 1992 enables access to adjoining or adjacent land for the purpose of carrying out ' preservation/repair works' to one's own property.
Generally, if you go onto your neighbour's land without their permission, you are trespassing. However, if you need to repair your home/property and to do so need access via your neighbour's land, you may go onto your neighbour's land without getting their permission.
In order to preserve good relations with your neighbours, you should still ask their permission before going on their land. If you have a relationship with your neighbour, it's always preferable to speak to them face to face, but you can also request access in a letter. If they refuse and try to stop entry, you can seek an order from the court forcing them to give you access. The Access to Neighbouring Land Act 1992 enables access to adjoining or adjacent land for the purpose of carrying out 'basic preservation works' to one's own property.
So, your neighbour can not block your access if you are looking to repair your boundary wall.
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