In the absence of a comprehensive and reliable source, for party and factional alignments in this period, no attempt is made to define them in this article.
The House of Commons: 1690-1715 provides some guidance to the complex and shifting political relationships, but it is significant that the compilers of that work make no attempt to produce a definitive list of each members allegiances.
In addition certain offices of profit, such as cabinet positions, required the MP to seek re-election.
During this period England (but not Scotland) counted its legal year as beginning on 25 March.
The c/u column denotes whether the by-election was a contested poll or an unopposed return.