The ward was created following the 2019 Reviews of Electoral Arrangements which were instigated following the implementation of the Islands (Scotland) Act 2018. The act allowed for the creation of single- and dual-member wards to allow for better representation of island areas. Uibhist a Tuath was formed from the previous Na Hearadh agus Ceann a Deas nan Loch ward. The ward is centred around the Isle of Harris – the southern portion of the island of Lewis and Harris – in the Outer Hebrides as well as a number of uninhabited islands including Pabbay and Ensay in the Sound of Harris; Gasker, Scarp and Taransay in the Atlantic Ocean; and Scalpay in the Little Minch.[2]