Paragraph 9 As regards any land which is the subject of an agreement—

the farmer shall obtain from the Secretary of State written advice concerning siting, design and materials before constructing or altering buildings or roads or carrying out other engineering operations authorised under Class VI of the Town and Country Planning General Development Orders 1977 to 1985(^f1). This requirement shall not apply to any development in respect of which notice of a direction restricting permitted development has been served under article 4 of the Town and Country Planning General Development Order 1977(^f2);