Thamesport renamed London Thamesport

So - Thamesport on the Isle of Grain has been renamed London Thamesport - anyone know why? Is Medway to become London, Medway, SE99 ? Keep muttering the litany of towns and villages as you go to sleep each night lest they be forgotten forever - Rochester...Chatham....Gillingham...Strood....Rainham...Hoo....Cliffe....Grain....All Hallows....High Halstow.....zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz