The 1915 St Austell by-election was held on 24 November 1915. The by-election was held due to the incumbent Liberal MP, Thomas Agar-Robartes, dying of wounds sustained in the Battle of Loos in the First World War. It was won by the Liberal candidate Sir Francis Layland-Barratt [1] who was unopposed due to a War-time electoral pact.
The 1915 Shipley by-election was held on 9 February 1915. The by-election was held due to the death of the incumbent Liberal MP, Percy Illingworth. It was won by the Liberal candidate Oswald Partington, who was unopposed. Under an agreement between the parties vacant seats were to be uncontested for the duration of the conflict, with only a candidate of the party holding the seat being nominated. Partington stood down at the next general election in 1918.
The Westbury by-election was a Parliamentary by-election which returned one Member of Parliament (MP) to the House of Commons of the Parliament of the United Kingdom, elected by the first past the post voting system.
The Ross and Cromarty by-election was a Parliamentary by-election. It returned one Member of Parliament (MP) to the House of Commons of the Parliament of the United Kingdom, elected by the first past the post voting system.
The 1911 Wellington by-election was held when the sitting MP Sir Alexander Fuller-Acland-Hood was elevated to the peerage. The by-election was won by the conservative candidate Dennis Boles.
The 1911 Middleton by-election was a parliamentary by-election held on 2 August 1911 for the Middleton division of Lancashire, a constituency of the British House of Commons.
The Kilmarnock Burghs by-election was a Parliamentary by-election held on 26 September 1911. It returned one Member of Parliament (MP) to the House of Commons of the United Kingdom, elected by the first past the post voting system. The constituency consisted of five parliamentary burghs: Kilmarnock in the county of Ayr, Dumbarton in the county of Dumbarton, Rutherglen in the county of Lanark and Renfrew and Port Glasgow in the county of Renfrew.
A by-election was held in Bristol East constituency in 1911 to fill a vacancy in the House of Commons of the United Kingdom.
A by-election was held in Hitchin constituency in 1911 to fill a vacancy in the House of Commons of the United Kingdom.
The Manchester South by-election was a Parliamentary by-election. It returned one Member of Parliament (MP) to the House of Commons of the Parliament of the United Kingdom, elected by the first past the post voting system.
The North West Norfolk by-election was a Parliamentary by-election. It returned one Member of Parliament (MP) to the House of Commons of the Parliament of the United Kingdom, elected by the first past the post voting system.
The Hythe by-election was a Parliamentary by-election. It returned one Member of Parliament (MP) to the House of Commons of the Parliament of the United Kingdom, elected by the first past the post voting system.
The Flint Boroughs by-election was a Parliamentary by-election. It returned one Member of Parliament (MP) to the House of Commons of the United Kingdom, elected by the first past the post voting system.
The 1915 St Helens by-election was held on 24 November 1915. The by-election was held due to the incumbent Conservative MP, Rigby Swift, becoming Recorder of Wigan. It was retained by Rigby Swift who was unopposed due to a War-time electoral pact, one of twenty six unopposed by-elections that year.
The 1915 Heywood by-election was held in England on 10 November 1915. The by-election was held due to the incumbent Liberal MP, Harold Thomas Cawley, being killed in the Battle of Gallipoli. It was won by the Liberal candidate Albert Illingworth who was unopposed due to a War-time electoral pact.
The 1915 Kilmarnock Burghs by-election was held on 28 May 1915. The by-election was held due to the incumbent Liberal MP, William Glynne Gladstone, being killed in action in the First World War. It was won by the Liberal candidate Hon. Alexander Shaw, who was unopposed. It was the last election held in Kilmarnock Burghs before the seat was abolished in 1918.
The 1915 Carmarthen Boroughs by-election was held on 17 March 1915. The by-election was held due to the incumbent Liberal MP, W. Llewelyn Williams, becoming Recorder of Cardiff. It was retained by Williams who was unopposed due to a War-time electoral pact.
The Hyde by-election was a Parliamentary by-election. It returned one Member of Parliament (MP) to the House of Commons of the United Kingdom, elected by the first past the post voting system. The by-election was held on 30 March 1916.
The Harborough by-election was a Parliamentary by-election held on 23 March 1916. Harborough returned one Member of Parliament (MP) to the House of Commons of the United Kingdom, elected by the first past the post voting system. The by-election was due to the resignation of the Liberal MP, John William Logan. It was won by the Liberal candidate Percy Harris.
The 1915 Scarborough by-election was held on 9 February 1915. The by-election was held due to the incumbent Liberal MP, Walter Rea, becoming Lord Commissioner of the Treasury. It was retained by Rea, who was unopposed due to the war-time electoral pact.
The 1915 Swansea District by-election was held on 6 February 1915. The by-election was held due to the incumbent Liberal MP, David Brynmor Jones, becoming a High Court Judge. It was won by the Liberal candidate Thomas Jeremiah Williams who was unopposed due to a War-time electoral pact.