Unity and Divisions on Departmental Select Committees: a Brexit Effect?

Most reports from UK departmental select committees are agreed by consensus, underpinning their reputation for non-partisan working in an adversarial House of Commons. However, divisions (formal votes) are more common than is often assumed, occurring on 9% of reports between 2010 and 2019. This article provides the first comprehensive analysis of unity and divisions on select committees. It finds that the incidence of divisions increases when opposition parties chair committees, when there are more rebellious members of parliament present and when more new members of parliament are in attendance. Brexit provoked significant inter-party and intra-party divisions in the Commons. In committees, divisions on Brexit reports are higher than those on other reports and the Exiting the European Union Committee has a clear Leave-Remain fault line. But, more broadly, the Brexit effect on select committees is limited and unanimity remains the norm even when there are policy differences between parties.