The 2/1st London Brigade was a 2nd Line formation of the Territorial Force of the British Army. It was formed at the start of World War I and served in overseas garrisons in Malta and Egypt. Although it never saw action as a formation, its constituent battalions fought at Gallipoli and served against the Senussi tribesmen. The brigade was then sent to the Western Front where it was broken up to provide drafts for 1st Line units.