The Conservative MP has said Britain now faces the "most difficult phase of all" after Boris Johnson’s Brexit Bill became UK law yesterday.
The Tory candidate has maintained that the NHS is not for sale but argued it would be "madness" not to make health trade deals with the US.
Iain Duncan Smith has urged MPs to "go round the clock" after many criticised Boris Johnson's fast-track schedule for Brexit debate.
The former Conservative Party leader has criticised the EU over Brexit for using Northern Ireland as a "pawn in this game".
Iain Duncan Smith said "conniving so and so's" could form an anti-Brexit government if Boris Johnson lost a snap election.
He said the leadership frontrunner has a “clear” plan for leaving the European Union despite a gridlocked Parliament and an unmoving EU.
Rory Stewart was the “marginal loser” in Tuesday’s Tory leadership debate, Iain Duncan Smith has said.
The former Tory leader has defended Boris Johnson’s controversial plans to raise the 40 per cent tax threshold from £50k to £80k.
Iain Duncan Smith has described the court case in which Boris Johnson will face accusations of misconduct in public office as “ludicrous”.
The former Conservative leader said the next person at the helm had to be a "leading Brexiteer".
Iain Duncan Smith said he did not have a "huge amount of confidence" in the government's Brexit negotiators.
Conservative MP Iain Duncan Smith has said that the party needed a new leader “who voted for Brexit” in order to regain the trust of voters.
The former Conservative Party leader said he was "really sad" to see the "formidable force" join the Brexit Party.
The former Conservative leader has dismissed claims that a no-deal Brexit could be "catastrophic".
Former Conservative leader Iain Duncan Smith has said that the “ball will be back in the EU’s court” if they want the UK to leave the EU in an “orderly” way.
Iain Duncan Smith says the UK must commit to the prospect of leaving without a deal in order to show the EU a new agreement must be reached
The former Conservative Party leader has revealed he wants the UK to leave the EU with a deal, but claimed negotiations have "not really begun".
The former Conservative leader said the government needed to be clear on what it wanted from the Brexit deal, accusing them of being too "vague" in negotiations.
Conservative MP Iain Duncan Smith has said Theresa May’s decision to hold a General Election in 2017 was “one of the worst decisions made by any government”.
The Conservative MP has claimed the Bank of England's predictions that a no-deal Brexit could result in a recession are 'nonsense'.
The former Conservative leader has said the UK will be trapped by May's withdrawal agreement.
The Joseph Rowntree Foundation has urged the government to lift cuts to the Universal Credit work allowance and change the payment schedule ahead of the Autumn Budget 2018
The architect of Universal Credit has said the Government’s welfare reform needs an additional £2 billion to work as planned.
A man in the audience at a fringe event at the Conservative conference on social justice said some MPs could have been doing "social justice work" instead of airing their views about Brexit
Iain Duncan Smith has said a no-deal Brexit would not be a cause for alarm, because it would mean reverting to World Trade Organisation rules, which already govern many trade deals worldwide
Iain Duncan Smith says businesses should not try and involve themselves in Brexit negotiations, as two unions push government for 'urgency'
Brexiteers Iain Duncan Smith and Jacob Rees-Mogg told Julia Hartley-Brewer that the European Commission should not be involved in "domestic politics"
The former Conservative leader says the intention was always to sever all ties with the EU and the Lords should not be involved
The former Conservative leader said that Brexit should mean the UK does not form any sort of partnership
Tory grandee and staunch Brexiteer said the EU is showing weakness, rather than strength, in its approach to the Brexit talks
The Northern Ireland problem could be solved by a free trade agreement claims Iain Duncan Smith - and it's up to the EU to resolve.
Former Tory leader said 'if anyone now decides to say another word about what they think Brexit looks like or where they would go, the answer is open the door and kick them out.'
Qureshi boasted on Twitter that he had voted twice for Labour, once by postal vote and then again at the polling station
The Tory grandee also took aim at Jeremy Corbyn during his chat with Julia Hartley-Brewer
The MP for Chingford and Woodfood Green spoke to Julia Hartley-Brewer about the former International Development Secretary
Iain Duncan Smith says funds set out for Brexit by Theresa May are not 'an emergency no-deal fund'
Tory grandee said 'nobody wants a leadership contest. We haven't got time to indulge in petty games'
Iain Duncan Smith says the Tory-DUP deal has brought funding forward that was for the most part planned as Northern Ireland has always required a high level of investment
Iain Duncan Smith believes if Labour implemented its tax plans, it wouldn't have enough money to fund its policies
The former Work and Pensions Secretary was appearing on the ITV programme when he decided to 'spit some lyrics'
Senior Government officials are claiming the Government plans to abandon its plans to leave the ECHR
Duncan Smith says Remainers can finally stop moaning once Theresa May gets clear majority
Theresa May is set to trigger Article 50 today, starting the Brexit process and two years of negotiations, but Iain Duncan Smith believes negotiations will take much longer
The measure to raise National Insurance contributions from self-employed workers by 2% has proved controversial
Sir Gerald Kaufman has passed away at the age of 86, his family said he had been suffering from a long-term illness for several months
Lord Michael Heseltine wants to ensure that Parliament have the ability to veto the Prime Ministers Brexit negotiations, including if she comes away without a deal
The Tory grandee and former minister spoke to Paul Ross after the article 50 bill passed its final vote in the House of Commons
Duncan Smith told Sam Delaney that several pieces of legislation are already going through Congress to facilitate the trade deal
The UK's ambassador to the EU Sir Ivan Rogers has stepped down and criticised the Government's 'muddled thinking' over Brexit
The Chancellor revealed the country's economy is to lose roughly £60 billion over the next five years as a result of the leave vote
Welfare cuts will leave low income families worse off by more than £2,500 a year by 2020, according to new research published ahead of Philip Hammond's autumn statement
IDS spoke to Julia Hartley-Brewer about his flagship policy and suggested it will have a 'transformative effect'
After Theresa May's speech at the Conservative Party Conference, MP Iain Duncan Smith says the process is going ahead whether people like it or not