The 1915 Howdenshire by-election was held on 10 February 1915. The by-election was held due to the death of the incumbent Conservative MP, Henry Harrison-Broadley. It was won by the Conservative candidate Stanley Jackson [1] who was unopposed due to a war-time electoral pact.
The Forest of Dean by-election was a Parliamentary by-election held on 24 February 1911. 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 Cheltenham by-election was a Parliamentary by-election held on 28 April 1911. 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 Kingston upon Hull Central by-election was a Parliamentary by-election held on 5 July 1911. 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 Luton by-election was a Parliamentary by-election held on 20 July 1911. 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 on 21 July 1911. The vacancy came about 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 Hitchin by-election was a Parliamentary by-election held on 23 November 1911. The constituency 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 Manchester South by-election was a Parliamentary by-election held on 5 March 1912. The constituency 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 Nottingham East by-election was a Parliamentary by-election held on 19 April 1912. It returned one Member of Parliament (MP) to the House of Commons of the Parliament of the United Kingdom, elected through the first past the post voting system.
The 1913 Flint Boroughs by-election was a Parliamentary by-election held on 21 January 1913. The constituency 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 Liverpool Kirkdale by-election was a parliamentary by-election held in England on 15 February 1915 for the British House of Commons constituency of Liverpool Kirkdale.
The 1915 Tiverton by-election was held on 30 November 1915. The by-election was held due to the death of the incumbent Conservative MP, Hon. William Walrond. It was won by the Conservative candidate Charles Carew who was unopposed due to a War-time electoral pact.
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 Kingston by-election was held on 16 November 1915. The by-election was held due to the incumbent Conservative MP, George Cave, becoming Solicitor General for England and Wales. It was retained by Cave.
The 1915 Cardiff by-election was held on 12 November 1915. The by-election was held due to the death of the incumbent Conservative MP, Lord Ninian Crichton-Stuart, who was killed in action in World War I. It was won by the Conservative candidate James Cory, who was unopposed.
The 1915 Appleby by-election was held on 27 October 1915. The by-election was held due to the incumbent Conservative MP, Sir Lancelot Sanderson, becoming a judge on the High Court of Justice. It was won by the Conservative candidate Cecil Lowther who was unopposed due to a War-time electoral pact.
The 1915 Glasgow Central by-election was held on 16 July 1915. The by-election was held due to the incumbent Conservative MP, Charles Dickson, becoming the Lord Justice Clerk. It was won by the Unionist candidate John MacLeod.
The 1915 Preston by-election was held on 9 June 1915. The by-election was held due to the incumbent Conservative MP, Alfred Aspinall Tobin, becoming a county court judge. It was won by the Conservative candidate Urban H. Broughton who was unopposed due to a War-time electoral pact.
The 1915 Uxbridge by-election was held on 10 November 1915. The by-election was held due to the Conservative MP, Charles Thomas Mills, being killed in action in the First World War. It was won by his brother, the Conservative candidate Arthur Mills, who was unopposed.
The 1915 Maidstone by-election was held on 22 February 1915. The by-election was held due to the incumbent Conservative MP, Charles Vane-Tempest-Stewart's, succession as seventh Marquess of Londonderry. It was won by the Conservative candidate Carlyon Bellairs who was unopposed due to a War-time electoral pact.
The 1915 Wigtownshire by-election was held on 12 February 1915. The by-election was held due to the incumbent Conservative MP, John Dalrymple, succeeded as the 12th Earl of Stair. It was won by his uncle, the Conservative candidate Hew Hamilton Dalrymple, who was unopposed.