This is a list of parliamentary by-elections in the United Kingdom held between 1868 and 1885, with the names of the previous incumbent and the victor in the by-election and their respective parties. Where seats changed political party at the election, the result is highlighted: light blue for a Conservative gain, orange for a Liberal (including Liberal-Labour and Liberal/Crofter) gain, light green for a Home Government Association (1870–1873), Home Rule League (1873–1882) or Irish Parliamentary Party (from 1882) gain and grey for any other gain.