BBC World Service | National Park Service | Internal Revenue Service | Distinguished Service Order | Special Air Service | United Parcel Service | Meritorious Service Medal (United States) | United States Postal Service | National Health Service | Meritorious Service Medal | Port Adelaide | Metropolitan Police Service | United States Forest Service | Port-au-Prince | German Academic Exchange Service | Secret Intelligence Service | Port Arthur | Port Jackson | Immigration and Naturalization Service | Distinguished Service Cross | port | Port of Spain | National Defense Service Medal | Port Royal | Port Elizabeth | National Service | United States Secret Service | Royal Naval Air Service | National Weather Service | Agricultural Research Service |
In 1976, the former Port Auxiliary Service merged with the Royal Maritime Auxiliary Service to provide Marine Services to the United Kingdoms Naval Service.