This is a list of the seaports of Great Britain.
Five companies own many of the largest of UK ports: Associated British Ports (ABP), Forth Ports, Hutchison Port Holdings (HPH), Peel Group and PD Ports, and the largest independent trust ports are Aberdeen, Belfast, Blyth, Dover, London and Milford Haven.
All of these port operators are members of the British Ports Association, the national trade body for ports and harbours, and publish trade statistics for HM Revenue and Customs.
Some of these ports will be converted to Free-ports: special economic zones where customs rules such as taxes do not apply until goods leave the port.
Ports are listed clockwise from the Scottish border.