Notwithstanding the provisions of any enactment, agreement or instrument affecting the farm the Council may, in accordance with arrangements agreed with the Hillingdon Council or, in default of agreement, determined by the Secretary of State on the application of either party made after giving notice in writing to the other of them, as from the appointed day, use the farm for the purposes of agriculture and the promotion of matters agricultural interest, and for the purposes of education, recreation and leisure and may do all such things as they consider necessary or desirable for those purpose or in connection with the management and maintainance of the farm and may permit the use of the farm by members of the public for the purposes of this section and subject to such terms and conditions as the Council think fit.