Labour's Yvette Cooper says she will support the government's new clause 13 but urges MPs to oppose the other amendments.
The debate ends and MPs begin voting.
The first amendment to be voted on is amendment 21 which takes out the requirement for the prime minister to put the EU’s chosen
extension date to MPs.
Government wants to limit the bill's 'most damaging effects'
House of Commons
Parliament
HoCCopyright: HoC
Brexit minister Robin Walker says the government is amending the bill, not because it supports the proposed legislation, but because it wants to "limit its most damaging effects".
He says he continues to urge MPs to reject the bill.
He argues that it is not needed because the government has already said it will seek an extension to prevent a no deal.
Exit dates 'deny the flexibility we need, says Labour MP
House of Commons
Parliament
Shadow Brexit minister Paul Blomfield says Labour will also oppose those amendments which seek to set an exit date.
"We really should have learnt that putting exit dates into law denies the flexibility we might need," he says.
PM's deal can only be improved with a long extension, say SNP MP
House of Commons
Parliament
HoCCopyright: HoC
The SNP's Europe spokesman Peter Grant says his party will vote against anything that seeks to limit any extension to a matter of weeks.
He says it is "nonsensical" to think that the prime minister's deal can be improved in a short period of time.
He says the prime minister's deal can only be improved "if we get a longer extension".
Live Reporting
Owen Amos, Gavin Stamp and Kate Whannel
All times stated are UK

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Latest PostGoodnight
MPs are going to continue voting, however this is where we have to leave our live text coverage.
You can still following proceedings on the video at the top of the page or by tuning into BBC Parliament.
Click here for the latest updates to the story.
MPs vote on new clause 4
House of Commons
Parliament
MPs are now voting on Bill Cash's new clause 4. This is a particularly procedural one.
It prevents amendments to standing orders during the motion on extension - standing orders are the rules that govern the proceedings of Parliament.
Anne Main's amendment is defeated
House of Commons
Parliament
The amendment tabled by Anne Main has been defeated by 488 votes to 123.
The Conservative MP's amendment would have place a limit on an extension to Article 50.
'An absolute whopper'
Today in Parliament presenter tweets...
MPs vote on amendment 1
House of Commons
Parliament
MPs are now voting on amendment 1.
This has been tabled by Conservative Anne Main and puts a limit of 22 May to any extension.
May and Corbyn: Brexit talks 'constructive'
A "programme of work" is agreed while Jeremy Corbyn calls the talks "useful but inconclusive".
Read moreSecond largest government defeat in modern times
The government was defeated on amendment 22 by 180 votes.
This makes it the second biggest defeat in modern times.
The biggest ever defeat was the first meaningful vote on the prime minister's deal.
The end is not quite in sight
Labour MP tweets...
Government defeated on extension amendment
House of Commons
Parliament
MPs have voted against the government's amendment 22 by 400 votes to 220.
This amendment would have ensured that nothing in the bill could have limited the power of government to seek an extension in their own way.
How MPs fit in their 10,000 steps a day...
SNP MP tweets...
What are MPs voting on now?
House of Commons
Parliament
Had it been supported by MPs, amendment 21 would have taken out the requirement for the prime minister to put the EU’s chosen extension date to MPs.
MPs are now voting on amendment 22.
This is a government amendment which makes sure the bill does not limit the power of government to seek an extension in their own way.
'Credible case' for a confirmatory referendum, says chancellor
The Peston programme tweets...
Chancellor says Brexit delay will inevitably be long
ITV political editor tweets...
A midnight debate?
Labour MP tweets...
MPs oppose amendment 21
House of Commons
Parliament
MPs have voted against amendment 21 by 313 votes to 304.
A customs union could be a 'temporary staging post', says DUP MP
BBC Northern Ireland correspondent
MPs begin voting on amendments
House of Commons
Parliament
Labour's Yvette Cooper says she will support the government's new clause 13 but urges MPs to oppose the other amendments.
The debate ends and MPs begin voting.
The first amendment to be voted on is amendment 21 which takes out the requirement for the prime minister to put the EU’s chosen extension date to MPs.
Government wants to limit the bill's 'most damaging effects'
House of Commons
Parliament
Brexit minister Robin Walker says the government is amending the bill, not because it supports the proposed legislation, but because it wants to "limit its most damaging effects".
He says he continues to urge MPs to reject the bill.
He argues that it is not needed because the government has already said it will seek an extension to prevent a no deal.
Exit dates 'deny the flexibility we need, says Labour MP
House of Commons
Parliament
Shadow Brexit minister Paul Blomfield says Labour will also oppose those amendments which seek to set an exit date.
"We really should have learnt that putting exit dates into law denies the flexibility we might need," he says.
PM's deal can only be improved with a long extension, say SNP MP
House of Commons
Parliament
The SNP's Europe spokesman Peter Grant says his party will vote against anything that seeks to limit any extension to a matter of weeks.
He says it is "nonsensical" to think that the prime minister's deal can be improved in a short period of time.
He says the prime minister's deal can only be improved "if we get a longer extension".