Chrysaor Production (U.K.) Limited (a Harbour Energy company) has submitted, for the consideration of the Secretary of State for Business, Energy & Industrial Strategy, the draft Decommissioning Programmes for the Caister-Murdoch System III Installations and Associated Pipelines, in accordance with the provisions of the Petroleum Act 1998. It is a requirement of the Act that interested parties be consulted on such decommissioning proposals.

The items/facilities covered by the Decommissioning Programmes are:

The Caister-Murdoch System III infrastructure lies 149 kilometres to 187 kilometres east of Easington, UK with the surface installations in Blocks 44/21a (Boulton BM), 44/19b (Katy KT), 44/18b & 44/23b (Kelvin TM) and 44/17b (Munro MH) and subsea installations in Blocks 44/22a (Murdoch K KM), 44/17c (McAdam MM), 44/17a (Hawksley EM), 44/22b (Boulton H HM) and 44/22b (Watt QM). The facilities include four infield satellite platforms (Boulton BM, Katy KT, Kelvin TM, Munro MH), each comprising a topside and a jacket structure; five subsea installations (Boulton HM, Hawksley EM, McAdam MM, Murdoch K.KM and Watt QM) and 19 pipelines (seven gas, seven methanol and five umbilicals).

Harbour Energy hereby gives notice that a summary of the Caister-Murdoch System III Installations and Associated Pipelines Decommissioning Programmes can be viewed at this address: www.harbourenergy.com, or alternatively a hard copy of the document may be requested by contacting Harbour Energy during office hours on 01224 205000.

Representations regarding the Caister-Murdoch System III Installations and Associated Pipelines Decommissioning Programmes should be submitted in writing to the person named at the address below, or via email to DecommissioningDCMailbox@chrysaor.com, by the consultation closing date of 8 April 2022. Submissions should state the grounds upon which any representations are being made.

Date: 7 March 2022

Michael Burnett

Decommissioning Strategy and Integration Manager

Harbour Energy

Rubislaw House

Anderson Drive

Aberdeen AB15 6FZ