Determining whether Liverpool Marina's outer car park falls under the Port of Liverpool's byelaws requires clarification of the Dock Estate's boundaries. The Port of Liverpool encompasses various docks and associated areas, but specific delineations are not readily available.
Liverpool Marina is situated near Brunswick Dock. Historically, Brunswick Dock has been part of the Liverpool dock system, which suggests it may fall within the Dock Estate. However, without definitive boundary information, it's unclear if the marina's outer car park is subject to the Port of Liverpool's byelaws.
I suggest you contact Liverpool Marina and clarify whether they are covered by the Port of Liverpool General Byelaws 2021. If it is, your appeal needs slightly different wording.