Transport Secretary Chris Grayling hit back at allegations that the Vote Leave campaign cheated during the EU referendum, in a heated interview by Jon Snow on Channel 4.
The Vote Leave campaign has been accused of breaching spending rules during the EU referendum, which took place in June 2016.
Mr Grayling said: “As a Cabinet minister, I want this country to get on with the job of delivering what the country voted for, which is Brexit.
“What I’m not trying to do is to take us down the road of reopening the arguments all over again, to fight the campaign all over again.
“The Electoral Commission has already investigated Vote Leave and says it’s fine.”
Whistleblower Shahmir Sanni accused the official Brexit campaign of using a different group, BeLeave, to overspend through the use of a Canadian data firm, AggregateIQ (AIQ).
When asked by Jon Snow about why Vote Leave used AIQ during the referendum, Grayling said: “Many different organisations took part as contractors as part of that programme, as they did on the other side.
“There was a lot of targeted campaigning, smart campaigning but ultimately what made the difference was the people who went round the country.
“The people who argued on the doorsteps, who argued on the high streets, those who argued on television, who argued on social media, to make the case.
“What matters is not whether you have a company doing this or doing that, it’s actually about the strength of the message.
“I think the message was strong and that’s what I think won the British people to believe that by voting leave they would secure a better future for their country.”
Vote Leave chief Dominic Cummings denied the claim that the campaign overspent and said he checked with the Electoral Commission before donating money to the group.