Minister unable to say whether Zahawi was telling truth when he first said taxes were fully paid – as it happened

Labour MP asks whether Zahawi statement in the summer was untrue, with Cabinet Office minister saying he does not know the answer

Nadhim Zahawi, the Conservative party chair, has welcomed the decision by Rishi Sunak to ask the No 10 ethics adviser to investigate his case. I am confident I acted properly throughout," Zahawi said.

Zahawi seems to be using a narrow definition of properly". In the statement he issued yesterday, he accepted that his original decision not to pay the tax that HM Revenue and Customs subsequently concluded he should have paid was down to a careless error. He said:

Following discussions with HMRC, they agreed that my father was entitled to founder shares in YouGov, though they disagreed about the exact allocation. They concluded that this was a careless and not deliberate' error.

Integrity and accountability is really important to me and clearly in this case there are questions that need answering ...

That's why the independent adviser has been asked to fully investigate this matter and provide advice to me on Nadhim Zahawi's compliance with the ministerial code, and on the basis of that we'll decide on the appropriate next steps.