How a bill becomes a law
A law does not appear because a minister says so. It is argued over, amended and voted on in two chambers first. Follow one bill all the way through.
Lesson overview
What you'll learn in this lesson
Understand the operation of Parliament, including voting and elections, and the role of political parties
Key learning points
- • Where a bill starts
- • Commons stages
- • The Lords and ping-pong
- • Parties, whips and free votes
This lesson at a glance
- 30 minutes
- 25 parts to scroll through
- 4 quick checks
- Marked quiz at the end
- Gentle pace: short sittings with pauses
Words to know
Scroll down — the lesson carries on below
Watch & discover
Part 1 of 25
Visual introductionPicture this
How a bill becomes a law
A law does not appear because a minister says so. It is argued over, amended and voted on in two chambers first. Follow one bill all the way through.
In a nutshell
Understand the operation of Parliament, including voting and elections, and the role of political parties
What you already know
Part 2 of 25
Before we start
What you already know
You should already know that the UK has a Parliament with a House of Commons and a House of Lords, and that MPs are elected in constituencies.
Key words
Part 3 of 25
Key words
Words you'll need today
- Bill
- A proposed law, before it has been passed.
- Reading
- A stage where a bill is introduced, debated or reviewed in a chamber.
- Amendment
- A change proposed to the wording of a bill.
- Royal Assent
- The formal approval that turns a bill into an Act of Parliament.
- Whip
- A party official whose job is to organise how MPs vote.
Reset break
Part 4 of 25
Pause
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Stretch, get a drink, look out of the window. There is no timer and nothing is counting down — your place is saved, so you can come back in five minutes or tomorrow.
Learning cycle
Part 5 of 25
Learning cycle 1 of 2
The journey of a bill
A short piece of teaching, then a check to make sure it has landed.
Explore the idea
Part 6 of 25
Learn
Where a bill starts
Most bills come from the government of the day and reflect its manifesto. A smaller number are private members' bills, introduced by an individual MP or peer. Either way the bill must survive the same journey, and most private members' bills run out of parliamentary time before they finish it.
Explore the idea
Part 7 of 25
Learn
Commons stages
First reading is a formality — the title is read out. Second reading is the big debate on the principle. Committee stage is where a smaller group goes through the bill line by line and votes on amendments. Report stage brings the amended bill back to the whole chamber, and third reading is the final Commons vote.
Reset break
Part 8 of 25
Pause
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Stretch, get a drink, look out of the window. There is no timer and nothing is counting down — your place is saved, so you can come back in five minutes or tomorrow.
Quick check
Part 9 of 25
Quick check
Part 10 of 25
Learning cycle
Part 11 of 25
Learning cycle 2 of 2
Who really shapes the wording
A short piece of teaching, then a check to make sure it has landed.
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Part 12 of 25
Pause
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Stretch, get a drink, look out of the window. There is no timer and nothing is counting down — your place is saved, so you can come back in five minutes or tomorrow.
Explore the idea
Part 13 of 25
Learn
The Lords and ping-pong
The bill then repeats the process in the Lords, which is often where technical flaws are caught. If the Lords amend it, the bill returns to the Commons. This back-and-forth is nicknamed ping-pong. The Commons, being elected, has the final say, and after Royal Assent the bill becomes an Act.
Explore the idea
Part 14 of 25
Learn
Parties, whips and free votes
Party discipline explains most voting patterns. Whips tell MPs how the party expects them to vote, and rebelling has consequences. On questions of conscience parties sometimes allow a free vote, and those debates look very different: MPs argue across party lines rather than along them.
Quick check
Part 15 of 25
Reset break
Part 16 of 25
Pause
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Stretch, get a drink, look out of the window. There is no timer and nothing is counting down — your place is saved, so you can come back in five minutes or tomorrow.
Quick check
Part 17 of 25
Common mix-ups
Part 18 of 25
Common mix-ups
Things people often get wrong
- A bill is not a law. It only becomes an Act after both Houses agree and Royal Assent is given.
- The Lords cannot simply block a bill forever; the elected Commons ultimately prevails.
- MPs are not required by law to follow the whip — the pressure is political, not legal.
Challenge round
Part 19 of 25
Game · Sort it
Which of these are true?
Drag each card into the right column. Tap a card first if dragging is fiddly.
True
Not true
Reset break
Part 20 of 25
Pause
That's sitting 5 of 6 done
Stretch, get a drink, look out of the window. There is no timer and nothing is counting down — your place is saved, so you can come back in five minutes or tomorrow.
Challenge round
Part 21 of 25
Game · Fill the gaps
Finish the sentences
Choose the word that belongs in each gap.
Party discipline explains most ____ patterns.
Challenge round
Part 22 of 25
Game · Recall cards
At which Commons stage is a bill examined line by line?
Card 1 of 4
Exit quiz
Part 23 of 25
Exit quiz
Show what you've learned
6 questions, marked together at the end. Nothing is timed.
1. Most bills are introduced by...
2. Second reading debates...
3. Private members' bills usually fail because of...
4. The Lords is useful mainly for...
5. A whip's job is to...
6. Which order is correct?
Mastery quiz
Part 24 of 25
Marked quiz
End of lesson quiz: How a bill becomes a law
4 questions, marked with the reasoning shown. No timer.
1. At which Commons stage is a bill examined line by line?
2. What is 'ping-pong'?
3. A free vote means MPs...
4. Royal Assent is best described as...
Lesson round-up
Part 25 of 25
Lesson round-up
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