[5] In the 2017 general election,[6] the Liberal Democrats and Green Party refrained from standing candidates against each other for certain constituencies in Brighton[7] and Oxford.

[8] Such informal arrangements ensured the successful re-election of the only Green MP Caroline Lucas for Brighton Pavilion and resulted in the Liberal Democrats regaining Oxford West and Abingdon as Layla Moran was elected there.

During the 2019 general election, this was extended to more constituencies, as part of the Unite to Remain campaign in order to boost each other's chances of winning those seats.

[14][15] Following the 2024 Dorset Council election, the new Liberal Democrat cabinet included Green Party councillor Clare Sutton.

[16] The Liberal Democrats are officially opposed to alliances, with senior party figures preferring a non-aggression pact with Labour over unilaterally standing down.