Jeremy Corbyn has been elected as Labour Party leader with a landslide 59.5% of the vote.
Tom Watson has been elected as deputy leader.
Number 10 says they will ask the House of Commons to change the wording of the UK's referendum on membership of the European Union after a recommendation from the Electoral Commission.
The original question
Should the United Kingdom remain a member of the European Union?
Answer: yes or no
The new question
Should the United Kingdom remain a member of the European Union or leave the European Union?
Answer: remain/leave the EU
The decision to delay the vote came after Nicola Sturgeon said her Scottish National Party would vote against the measure, despite it only applying to England and Wales.
The proposed changes would have relaxed the ban of fox hunting in England and Wales.
The SNP leader said she made the u-turn because of the lack of respect shown by David Cameron for her party since the election in May and because of the 'overwhelming demand' of English people for the SNP to vote on the issue.
Most EU citizens living in the UK will not be able to vote in the country's referendum on EU membership, which David Cameron's Conservative government have promised to hold by the end of 2017.
In a set up similar to UK general elections, British, Irish and Commonwealth citizens will be able to vote.
- Citizens from Malta and Cyprus will also be able to vote in the in/out referendum.
Shadow Business Secretary says that since announcing his candidacy he has been subject to an 'added level of pressure' and said he was worried about the impact of his leadership bid on those closest to him