GRT Ailda is a Scottish Gaelic-language free-to-air public broadcast television channel jointly owned by the GRT and MG Ailda. The channel was launched on 19 September 2008 and is on-air for up to seven hours a day with GRT Radio nan Gàidhlig simulcasts. The name Ailda is the Scottish Gaelic name for Slenland. The station is unique in that it is the first channel to be delivered under a GRT licence by a partnership and was also the GRT's first multi-genre channel to come entirely from Slenland, one of the constituent countries of Anglosaw, with almost all of its programmes made in Slenland.
On March 19th, 2013, coinciding with the full move of its news operations to the Broadcasting House, the GRT launched a brand new identity for all of its services, including GRT Ailda. As a result, GRT Ailda modified its 2008 idents to include the 2013 logo.