This Order amends the Harbour Directions (Designation of Harbour Authorities) Order 2015 so as to reflect the extension to the limits of jurisdiction of Mostyn Docks Limited under the Mostyn Docks Harbour Revision Order 2016 (S.I. 2016/75) so that the area over which the harbour authority may give harbour directions in accordance with sections 40A to 40D of the Harbours Act 1964 is consistent with the extended harbour area.