Of these only Tilbury is operational, along with DP World's London Gateway. Eventually Tilbury Docks were privatized and became the Port of Tilbury, with their dockmaster being redesignated as harbourmaster; this led to the PLA harbourmaster being redesignated chief harbourmaster.
Only Tilbury remains in operation, alongside DP World's London Gateway. The Tilbury Docks were later privatized and rebranded as the Port of Tilbury, resulting in a change in title for their dockmaster to harbourmaster; this subsequently led to the PLA harbourmaster being elevated to chief harbourmaster.