The businesswoman behind the successful legal battle against launching Brexit without Parliament's approval has said "everyone in the country" should be her "biggest fan" following the controversial court case.
Gina Miller said the High Court ruling has stopped the Government acting like a "tin-pot dictatorship" over plans to trigger Article 50 without consulting Parliament.
The investment fund manager and philanthropist said the Press had "behaved disgracefully" following the court judgment.
Gina Miller said the High Court ruling has stopped the Government acting like a "tin-pot dictatorship"
She told BBC One's The Andrew Marr Show: "This is about creating legal certainty and actually, everyone in the country should be my biggest fan because I've used my own money and a few of us we have used our own money to create legal certainty for Mrs May to move ahead."
She said it was "misdirection" to claim that the decision was unpicking parliamentary sovereignty.
"The case is that she cannot use something called the Royal Prerogative to do it because we do not live in a tin-pot dictatorship," she said.
Ms Miller, 51, who was born in Guyana but grew up in Britain, co-founded the firm SCM Private and has previously launched a campaign with her hedge-fund manager husband Alan against mis-selling and hidden fund charges in the City of London's fund management industry.
Reaction to the Brexit case had been fuelled by sexism, racism and homophobia, she said.
"I was aware there would be nastiness because anything to do with the word Brexit, people lose their minds and it's all about heart."
Ms Miller came face-to-face with interim Ukip leader Nigel Farage on the programme, with the pair clashing over what could happen following TH?I TRANG V?I PH? KI?N T?I ??P TU?I 30.TRANG V?I PH? KI?N T?I ??P TU?I 30. the High Court ruling.
Mr Farage said: "She has done with what she believes in, I support people doing what they believe in.
"However, I just want to ask her what part of the word 'leave' don't you understand?"
Ms Miller replied: "Have you read the case?"
Mr Farage pressed Ms Miller over whether she wants the UK to remain part of the single market, prompting her to reply: "I'm not the politician here. I'm the person who saw the elephant in the room, which is there's no legal certainty.
"You should actually be my biggest fan because I've just created the legal certainty so that Theresa May can now, rather than appealing, go ahead, have the debate and leave - not interrupt her timetable."
Mr Farage accused Ms Miller of giving those in Parliament who argue the referendum does not mean Britain should leave the single market "the chance, effectively, to overturn" Mrs May's wish and mandate her.
He added: "If that happens, you will have stirred up, I think, the biggest political upset we've ever seen."
Ms Miller insisted the UK has a representative democracy which ensures politicians have to debate issues, adding: "That's what you argued for the whole way through - parliamentary sovereignty."
Mr Farage replied: "No, no. This is not about whether Parliament is sovereign, it's about whether the British people are sovereign.
"That's the real argument here and for you as a pro-EU supporter to talk about parliamentary sovereignty in Britain is a bit rich, isn't it?"
The duo found common ground after Mr Farage said: "I would now wish to see constitutional change to make referendums binding and that would end this argument and there'd be no need for this case."
Ms Miller said: "Absolutely."
Gina Miller said the High Court ruling has stopped the Government acting like a "tin-pot dictatorship" over plans to trigger Article 50 without consulting Parliament.The investment fund manager and philanthropist said the Press had "behaved disgracefully" following the court judgment.
Gina Miller said the High Court ruling has stopped the Government acting like a "tin-pot dictatorship"
She told BBC One's The Andrew Marr Show: "This is about creating legal certainty and actually, everyone in the country should be my biggest fan because I've used my own money and a few of us we have used our own money to create legal certainty for Mrs May to move ahead."
She said it was "misdirection" to claim that the decision was unpicking parliamentary sovereignty.
"The case is that she cannot use something called the Royal Prerogative to do it because we do not live in a tin-pot dictatorship," she said.
Ms Miller, 51, who was born in Guyana but grew up in Britain, co-founded the firm SCM Private and has previously launched a campaign with her hedge-fund manager husband Alan against mis-selling and hidden fund charges in the City of London's fund management industry.
Reaction to the Brexit case had been fuelled by sexism, racism and homophobia, she said.
"I was aware there would be nastiness because anything to do with the word Brexit, people lose their minds and it's all about heart."
Ms Miller came face-to-face with interim Ukip leader Nigel Farage on the programme, with the pair clashing over what could happen following TH?I TRANG V?I PH? KI?N T?I ??P TU?I 30.TRANG V?I PH? KI?N T?I ??P TU?I 30. the High Court ruling.
Mr Farage said: "She has done with what she believes in, I support people doing what they believe in.
"However, I just want to ask her what part of the word 'leave' don't you understand?"
Ms Miller replied: "Have you read the case?"
Mr Farage pressed Ms Miller over whether she wants the UK to remain part of the single market, prompting her to reply: "I'm not the politician here. I'm the person who saw the elephant in the room, which is there's no legal certainty.
"You should actually be my biggest fan because I've just created the legal certainty so that Theresa May can now, rather than appealing, go ahead, have the debate and leave - not interrupt her timetable."
Mr Farage accused Ms Miller of giving those in Parliament who argue the referendum does not mean Britain should leave the single market "the chance, effectively, to overturn" Mrs May's wish and mandate her.
He added: "If that happens, you will have stirred up, I think, the biggest political upset we've ever seen."
Ms Miller insisted the UK has a representative democracy which ensures politicians have to debate issues, adding: "That's what you argued for the whole way through - parliamentary sovereignty."
Mr Farage replied: "No, no. This is not about whether Parliament is sovereign, it's about whether the British people are sovereign.
"That's the real argument here and for you as a pro-EU supporter to talk about parliamentary sovereignty in Britain is a bit rich, isn't it?"
The duo found common ground after Mr Farage said: "I would now wish to see constitutional change to make referendums binding and that would end this argument and there'd be no need for this case."
Ms Miller said: "Absolutely."