The siting of the proposed office/storage building within the open countryside would represent sporadic development in the open countryside, which would be detrimental to the landscape character and appearance of this part of the National Park. The building would be clearly seen from the adjacent public highway and wider landscape and by reason of its extension of development into the open countryside would have a harmful impact on this landscape . The proposal would therefore be contrary to Policy BL1 of the North York Moors Local Plan which only allows small extensions to existing buildings in the open countryside..