Why are Private Members' Bills debated on a Friday in the House of Commons?

Publications / Guides

Why are Private Members' Bills debated on a Friday?

4 May 2022

Debate in the House of Commons chamber. (© UK Parliament / Jessica Taylor (CC BY-NC 2.0))

Thirteen Friday sittings are set aside in the House of Commons each Session for consideration of PMBs, signifying a commitment to provide some freedom from the normal constraint that 'Government business shall have precedence at every sitting' (Standing Order No.14(8)). Unless the House decides otherwise, these are the only Friday sittings held each Session.

Last updated: 4 May 2022

How much parliamentary time is allocated to Private Members’ Bills each Session?

Cumulatively, 13 sitting Fridays amounts to 65 hours of parliamentary time for consideration of PMBs each Session, each Friday sitting being five hours in length (9.30am-2.30pm).

This time can be encroached upon by petitions, Urgent Questions, Points of Order to the Speaker, and government statements.

A few additional sitting Fridays may be provided if the Session is of extended length (as for example in the 2010-12 and 2017-19 Sessions).

The government can make additional time available other than on Fridays to facilitate discussion of a PMB if it wishes, but it is rare for it to do so.

The first seven Fridays: Second Reading debates

After a bill is introduced at First Reading, the Speaker will ask the MP 'Second Reading what day?'

The MP must name an available Friday sitting day.

The first seven of the 13 sitting Fridays are set aside for Second Reading of Ballot Bills: those MPs who secured the top seven places in the ballot thus have the first choice of dates.

MPs outside the top seven are likely to be listed second or third on the Order Paper on the Friday that is chosen, and their bills will therefore have less chance of being debated.

The 8th to 13th Fridays: the ‘slaughter of the innocents’ and the order of precedence

The remaining 8th to 13th sitting Fridays are dedicated to consideration of those PMBs that have made most progress.

The 13th and final sitting Friday allotted for PMBs - colloquially known as the 'slaughter of the innocents' on account of its attrition rate - is largely taken up with Lords amendments.

At this point, a complex order of precedence dictates which bills can make use of the remaining time. This order of precedence includes:

consideration of Lords amendments;
Third Readings;
new Report stages;
adjourned Report stages;
adjourned Committee proceedings;
bills appointed to Committees of the Whole House; and
Second Readings.

Non-sitting Fridays

A backbencher can also lay down a PMB for consideration on any non-sitting Friday.

In the event that sitting days are extended (as happened in the longer-than-usual 2010-12 session) then the PMBs on the Order Paper for these new sitting days have priority.

Cite this

Hansard Society (2022), Guide to Private Members' Bills, (Hansard Society: London)

Latest / Highlights

News / Parliament Matters Bulletin: What’s coming up in Parliament this week? 13-16 April 2026

Ministerial Statements are expected on developments during the recess, particularly in the Middle East and on Russian submarine activity. The English Devolution Bill completes its final Lords stages, while legislative “ping-pong” continues on the Pension Schemes, Victims and Courts, Crime and Policing, and Children’s Wellbeing and Schools Bills. MPs scrutinising the Courts and Tribunals Bill will examine proposals to restrict jury trials. In the Lords, two bills – on the Grenfell Tower Memorial and ministerial salaries – will be fast-tracked through all stages in a single day. MPs will debate SEND reform, statutory menstrual leave, children’s safeguarding, and accessibility in the House of Commons. The Lords will consider changes to Immigration Rules and access rights for departing hereditary peers. Chloe Mawson becomes the first woman to serve as Clerk of the Parliaments. And the Treasury Committee will hold an appointment hearing with the new chief executive of the Prudential Regulatory Authority.

News / Will key Government bills pass by the end of the parliamentary Session? - Parliament Matters podcast, Episode 138

With the King’s Speech set for 13 May, attention turns to the end of the current parliamentary Session and the frantic “wash-up” period before prorogation, likely in late April. We assess which Bills can still make it through in the remaining sitting days. With major Lords amendments on issues including revenge porn, social media access for under-16s, court transcripts and AI safety, Ministers face intense pressure and possible concessions. We also examine the political stakes around the Chagos Islands Bill and the stalled Hillsborough Law. The episode also answers listener questions on parliamentary procedure and reform, before exploring the sharp rise in Written Parliamentary Questions and what it means for effective scrutiny in Westminster. Listen and subscribe: Apple Podcasts · Spotify · Acast · YouTube · Other apps · RSS

News / Who really decides Immigration Rules: Parliament or the Home Secretary? - Parliament Matters podcast, Episode 137

Who really controls immigration law when Ministers can rewrite key rules with minimal parliamentary scrutiny? Jonathan Featonby of the Refugee Council explains the Home Secretary’s far-reaching powers over Immigration Rules. We also discuss the Crime and Policing Bill, where amendments on AI and abortion highlight the challenges posed by rushed law-making and executive overreach. And we look ahead to the next phase of the assisted dying debate, as supporters in the House of Commons prepare for a renewed legislative push in the next parliamentary Session. Listen and subscribe: Apple Podcasts · Spotify · Acast · YouTube · Other apps · RSS

Submissions / Written Parliamentary Questions - Our evidence to the House of Commons Procedure Committee

The use of Written Parliamentary Questions (WPQs) is rising sharply. Since July 2024, MPs have tabled questions at unprecedented levels. By late 2025 MPs were tabling over 600 per sitting day, more than double the long-term average. WPQs are a cornerstone of parliamentary scrutiny, helping MPs obtain information, challenge government policy and put issues on the public record. But this surge raises important questions about how Parliament balances transparency and accountability with the practical limits of the system. The House of Commons Procedure Committee is now examining the issue and has just published our submission containing our latest data and analysis.

News / Jury trials under threat? The Courts and Tribunals Bill explained - Parliament Matters podcast, Episode 136

Plans to restrict the right to a jury trial have cleared their Second Reading in the Commons, but the proposals in the Courts and Tribunals Bill face growing resistance, including from Labour rebels. We discuss the legal and constitutional implications with barrister Lord Macdonald of River Glaven, examining what the reforms could mean for defendants’ rights and the criminal courts system. We also assess the passage of legislation removing hereditary Peers from Parliament, and the late compromise that eased opposition in the House of Lords. Meanwhile Sir Lindsay Hoyle clashes with the Chief Whip over delays in the division lobby, and newly released papers on Peter Mandelson’s Washington appointment raise fresh political questions. Listen and subscribe: Apple Podcasts · Spotify · Acast · YouTube · Other apps · RSS