British Parliamentary — BP — is the format used at the World Universities Debating Championship, the European Universities Debating Championship, and most university-level tournaments globally. If you're debating competitively at university, this is almost certainly the format you'll encounter.
It's also, honestly, the best format for developing well-rounded debaters. It forces you to adapt to positions you didn't choose, respond to arguments you didn't prepare for, and differentiate yourself from a team that's ostensibly on your side. It's hard. It's also incredibly rewarding once you get the hang of it.
Here's how it works.
The basics
A BP round has four teams of two people each. Two teams argue in favour of the motion (Government) and two argue against it (Opposition).
The four teams are:
Opening Government (OG): Proposes the motion and defines the debate. Speaks first and third.
Opening Opposition (OO): Responds to OG's case. Speaks second and fourth.
Closing Government (CG): On the same side as OG but must bring new material. Speaks fifth and seventh.
Closing Opposition (CO): On the same side as OO but must bring new material. Speaks sixth and eighth.
Each speaker gives a single speech of 7 minutes (at most tournaments). There are 8 speeches total. The round takes about an hour including prep time.
Speech order and roles
Prime Minister (OG): Sets up the debate. Defines the motion if it's ambiguous, establishes the framing, and delivers OG's case — usually two to three arguments.
Leader of Opposition (OO): Responds to OG's arguments and delivers OO's case. This speech has dual duties: you need to rebut and construct.
Deputy Prime Minister (OG): Rebuilds OG's case against OO's attacks, extends OG's arguments with more depth, and rebuts OO's constructive arguments. This is a defensive speech.
Deputy Leader of Opposition (OO): Same as DPM but for the opposition. Rebuilds OO's case, extends it, rebuts OG.
Member of Government (CG): This is where closing half begins. The Member speech must bring an extension — a new argument or analysis that OG didn't make but that supports the government side. The extension is what differentiates CG from OG.
Member of Opposition (CO): Same role for opposition. New extension that OO didn't make.
Government Whip (CG): The final government speech. Whip speeches are unique — they cannot introduce new arguments. Instead, the whip summarizes the round, explains why CG's extension matters most, and weighs the entire debate. This is a persuasion and synthesis speech.
Opposition Whip (CO): Same role for opposition. Final speech of the round. Summarizes, sells CO's extension, and gives the judge a reason to rank CO first.
Points of Information (POIs)
During each speech, members of opposing teams can offer Points of Information. You stand up and say "point of information" or "on that point." The speaker can accept or decline.
If accepted, you get about 15 seconds to make a point, ask a question, or challenge something the speaker just said. The speaker then responds and continues.
Rules:
- POIs can only be offered during the middle 5 minutes of a 7-minute speech (not the first or last minute, called "protected time")
- You can only offer POIs to teams on the other side (Government can't POI Government)
- Speakers should accept at least 1-2 POIs per speech — judges notice if you take none
- Good POIs are short, pointed, and expose a flaw. Bad POIs are long, rambling, or just restate your own argument
POIs do double duty: they disrupt the speaker's flow and they show the judge that your team is engaged and has something to say. Teams that never offer POIs are invisible to the judge during the other side's speeches.
The extension: what closing teams need to know
The extension is the single most confusing and most important concept in BP for new debaters.
Closing teams (CG and CO) are on the same side as their opening team. CG agrees with OG. CO agrees with OO. But to win — or even to beat your own opening half — you need to say something that opening didn't say.
This is the extension. It's a new argument, a new angle, a new stakeholder analysis, or a deeper mechanism that takes the debate somewhere opening couldn't or didn't go.
What counts as an extension:
- A new stakeholder who's affected differently than the ones opening discussed
- A second-order effect that opening didn't trace
- A fundamentally different mechanism supporting the same conclusion
- An analysis of why the arguments clash the way they do (a meta-level contribution)
What does NOT count as an extension:
- Restating opening's arguments in your own words
- Adding an example to opening's argument
- Just doing more rebuttal of the other side without new constructive material
- Agreeing loudly with opening
Finding an extension is hard, especially under time pressure. There's a full lesson on how to do it with concrete techniques you can practice.
How teams are ranked
The judge ranks all four teams from 1st to 4th. There are no ties. Each team gets team points:
- 1st place: 3 points
- 2nd place: 2 points
- 3rd place: 1 point
- 4th place: 0 points
At most tournaments, teams accumulate team points across preliminary rounds, and the top teams "break" into elimination rounds.
Individual speakers also receive speaker scores (usually on a scale of 60-80 or similar), which are used for individual awards and sometimes for breaking ties.
How judges decide rankings
Judges evaluate each team based on the arguments that survived the round. The key questions:
- Which team's arguments were the most developed?
- Which team engaged most effectively with the other side?
- Which team gave the judge the clearest reason to rank them first?
- For closing teams: was the extension genuinely new and well-developed?
A common pattern: OG makes a solid case, CG makes a weaker extension, but CG weighs better. The judge might rank CG above OG because CG's weighing resolved the round in a way OG's constructive didn't. This happens more than debaters expect, and it's why weighing is the most important skill in the format.
Strategy for each position
If you're OG: Define the debate clearly. Make your framing so clean that CG has to work within it, not around it. Two strong arguments are better than three mediocre ones.
If you're OO: Balance rebuttal and construction. If you only rebut, you don't have a case. If you only construct, you haven't engaged. Aim for 40% rebuttal, 60% construction in the first speech.
If you're CG: Your extension is everything. If your extension isn't clearly distinct from OG, you'll be ranked below them even if your rebuttal is better. Spend most of your prep time figuring out your extension, not your rebuttal.
If you're CO: Same as CG — extension is king. But you have one advantage: you speak last, which means you get to frame the entire round in your closing speech. A good whip speech can rescue a round for CO.
Getting started
If you're new to BP, start with the Foundations track, which teaches argument construction, refutation, and weighing — the core skills that every speech in every position requires. Once you're comfortable with those, the Advanced track covers the BP-specific skills: extensions, whip speeches, framing, and motion-specific strategy.
All free. No account needed. Pick a lesson and start.
— Matt