List of United Kingdom MPs who only sat in the 29th Parliament
General elections to the House of Commons of the United Kingdom were held in January 1910 and again in December 1910. There were 23 Members of the 1910 Parliament who were not members of any preceding or following Parliament. Their tenure as MPs therefore lasted at most 286 days, making them among the shortest-serving MPs in history. On only one other occasion in the 20th century, 1974, have two British general elections taken place in the same year.
One Independent Nationalist member was disqualified. Six members (four Liberal and two Conservative) did not offer themselves for re-election. The remaining 16 (11 Conservative, two Liberal, two Irish Unionist and one Liberal Unionist) were candidates for re-election but were not returned.
Disqualified
One member first elected in January 1910 had his election overturned on petition:
- Eugene O'Sullivan (Independent Nationalist, East Kerry)
Retired
Five members first elected in January 1910 retired in December:
- Sir Thomas Barclay (Liberal, Blackburn)
- Alfred du Cros (Conservative, Bow and Bromley)
- Cecil Alfred Grenfell (Liberal, Bodmin)
- James Knott (Conservative, Sunderland)
- Trebitsch Lincoln (Liberal, Darlington)
Additionally, one member first elected at a by-election during the Parliament retired in December:
- Frederick William Gibbins, (Liberal, Mid Glamorgan)
Defeated
Sixteen members first elected in January 1910 were defeated in December:
- William Augustus Adam (Conservative, Woolwich)
- Gerald Archibald Arbuthnot (Conservative, Burnley)
- Walter Annis Attenborough (Conservative, Bedford)
- Robert Brassey (Conservative, Banbury)
- Gerald Fitzgibbon Brunskill (Irish Unionist, Mid-Tyrone)
- Thomas Charles Pleydell Calley (Liberal Unionist, Cricklade)
- Sir Henry Arthur Colefax (Conservative, Manchester South West)
- Bryan Ricco Cooper (Irish Unionist, Dublin South)
- Sir Charles Dillwyn-Venables-Llewellyn (Conservative, Radnorshire)
- Sir William Henry Dunn (Conservative, Southwark West)
- John Kenneth Foster (Conservative, Coventry)
- Frederick Hindle (Liberal, Darwen)
- John Arthur Jackson (Conservative, Whitehaven)
- Max Muspratt (Liberal, Liverpool Exchange)
- Douglas Proby (Conservative, Saffron Walden)
- George Henry Verrall (Conservative, Newmarket)