The name was used to refer to an infrastructure project in the area,[5][6] which became a single authority in 2019 called Bournemouth, Christchurch and Poole.
One of the parties which stood for the inaugural elections was initially called Three Towns Together.
The term is also sometimes used to refer to the towns of Great Harwood, Clayton-le-Moors and Rishton, situated to the north of Accrington in the Hyndburn district of Lancashire.
[7][8] The term 'three towns' is also used[9][10][11][12] in reference to the towns of Ardrossan, Saltcoats and Stevenston in North Ayrshire (historically Cunninghame) which together form one contiguous settlement along the eastern shore of the Firth of Clyde with a population of around 32,000; most local amenities are shared across the localities.
[14] The term 'three cities' (more commonly: Tricity, Polish: Trójmiasto) is used for the metropolitan area of Gdańsk, Gdynia and Sopot on the Baltic Coastline (as well as minor towns in their vicinity).