Is cabinet collective responsibility now a hindrance to governance?

Cabinet collective responsibility, initially devised as a means of effective governance, has become much harder to enforce due to mass democracy and careerist ambition. But it survives as a tool of prime ministerial survival.

By Alastair Mackenzie

Image Credit: Number 10 / Flickr

3 MARCH 2026

In British politics, there are few greater examples of an unwritten law being more sacrosanct than its written counterparts than that of cabinet collective responsibility. Decisions taken by Cabinet must be backed unanimously by ministers in public, even if there are misgivings in private. If a cabinet minister simply cannot stomach a decision, they must cease to be a cabinet minister. Like much of life, the theory sounds beautifully straightforward, but the practical application of it in modern politics has become much more complicated.

Originating from the reign of George III, the convention of collective responsibility was born in an age when the monarch was still very hands-on in politics and could develop the tendency to favour different factions. The King would see his ministers one-by-one in what was termed his ‘closet’. Rather like a group of misbehaving schoolboys being called in to see the headmaster, the Ministers would agree beforehand what their unified position on issues was, thereby preventing any potential attempts by the King to encourage splits.

As political power gradually shifted away from the Sovereign, the relatively recent development of the Cabinet began to operate on a more collective basis and was used as a means of passing contentious pieces of legislation. The most notorious example of this came in 1829 over the issue of Catholic emancipation, a policy loathed by the then King George IV. Determined to prevent tensions in Ireland reaching a full-blown civil war, the Duke of Wellington and his Home Secretary Robert Peel proposed allowing Catholics to hold public office; they were previously excluded. 

After being guided through the Commons by Peel, the bill encountered fierce opposition from both the Lords and the Monarch, to which Wellington responded by threatening to resign and collapse his own ministry. Despite initially accepting Wellington’s resignation, the King’s attempts to orchestrate an anti-Catholic Whig majority failed, and so Wellington was recalled and the bill was passed. The Cabinet was now no longer just a collection of the Sovereign’s favourites, it was a living organism. A cellular being with its own mind, its own will, its own attributes, and its own foibles.

With the Victorian era came the establishment of collective responsibility as a fundamental principle that governments followed day-by-day, rather than only in times of legislative loggerheads. However, this was an age in which herding ministerial cats was far easier than it is today.

For a start, the State took responsibility for a lot less than now. The beginnings of the welfare state were still half a century away, education was seen as a local issue, and the British polity generally concerned itself with the administration of Empire. As a result, successive ministries contained comparatively fewer people, managing departments that handled much smaller workloads. At a time when one generally needed money to be in politics, many of those serving in Cabinet were drawn from wealthy aristocratic families, some of them were even related. Government policy could be discussed around dinner tables before being adopted at the Cabinet table.

Similarly, this was still the age when the ability to vote was tied to the holding of property or cash. Even after three landmark Acts, the electorate still excluded 40% of men and all women. A small company of governors playing to an equally small number of governed.

Since the 1930s, the instances of collective responsibility being dispensed with has grown. The Invasion of Iraq in 2003 and the referenda on continued EU membership in 1975 and 2016, to name but three, all saw the Prime Minister of the day allow Cabinet ministers to break rank with the Government’s official stances on these issues. The Coalitions that dominated the political landscapes of the 1930s and the first half of the 2010s, allowed Cabinet ministers from their constituent parties to withhold support from or vote against specific policies. This was most noticeable in 2010 when the Liberal Democrats were permitted to abstain from joining their Conservative colleagues in voting to raise tuition fees.

So, what has changed? Why does it feel much harder for a Prime Minister to control their Cabinet?

Well, to revisit a previous point, democracy spread. The 1918 and 1928 Acts removed the stipulation that the franchise was dependent on the holding of property or wealth, so the size of the electorate grew and then grew again. So governments now had more voters to win over. These increased numbers of new voters had more newspapers in which they could follow developments at the top of government. Thanks to the expansion of tabloid journalism towards the end of the 19^th Century, political news stories could be presented in a more colloquial style designed to court comment and controversy. Rumours of rifts in the Cabinet could be presented to the masses as a drama that they could invest interest and emotion in. Ministers could be viewed by millions of hooked readers as heroes or villains locked in an epic battle of wills; it could make for riveting reading.

Crucially though, one development that is perhaps overlooked is the idea that politics can be a career rather than merely a duty that came with the territory of being of noble blood or sufficient wealth. Politics has now become an employment arena like any other sector of the economy, complete with its own career ladder and competitiveness for the top jobs. With an environment that allows such personal ambition to be harboured, it is hardly surprising that the proverbial defenestration of a Prime Minister now seems not only easy, but personally beneficial.

Given these monumental changes in the workings and nature of British politics, collective responsibility now seems to have evolved yet again, from a fundamental principle of day-to-day governance to a vanguard of a ministry’s very survival. The rise of political careerism in particular has meant that successive Prime Ministers have come to rely on the principle as a means of rooting out dissenters and presenting them with an ultimatum: toe the line or be consigned to the wilderness of the backbenches. More often than not, this scenario will result in the dissenter coming off second-best. In this respect, collective responsibility becomes a government’s first defence against any attempts by its members to bring it down in order to further their own prospects.

Collective responsibility is a convention, not a law. There is no written charter or document of authority that declares its legal validity. Instead, its ability to maintain a government’s status is derived from centuries of successive ministers gradually realising that their survival depends on their willingness to co-operate and to be in lockstep with the Prime Minister of the day.

For all its satire, understated humour and endless dexterity with the English language, one of the many pearls of real observation made by Yes, Prime Minister is “the Cabinet is divided…That’s why it mustn’t look it.” With an increased and better-informed electorate, instant news cycles and social media, and career politicians looking to climb the greasy pole, the idea that Cabinet should present a united front has been transformed from being the key to good, effective governance to the lynchpin of governing at all.

Alastair Mackenzie is the Campaign Manager of Constitutional Conservatives. You can follow him on X/Twitter here