391. Failure to comply with agreement.

If the owner1 or occupier of any access land2 fails to carry out within the required time3 any works which he is required by an agreement4 to carry out, the access authority5, after giving not less than 21 days' notice of its intention to do so, may take all necessary steps for carrying out those works6.

If the owner or occupier of any access land fails to observe any restriction which he is required by an agreement to observe, the access authority may give him a notice requiring him within a specified period of not less than 21 days to