Britain's top court on Tuesday begins hearing arguments for allowing a secession vote without approval from British Prime Minister Liz Truss and her government.However, the Scottish National Party argues the vote for Britain to leave the European Union two years later was a game changer.Register now for FREE unlimited access to Reuters.comSturgeon argues that as voters backed pro-independence parties in elections for the Scottish parliament last year, there was a mandate for them to bring forward a bill to hold a referendum on Oct. 19, 2023.Asked during an interview on BBC TV whether she was confident that will happen, Sturgeon said: "Yes, I am confident that can happen.""If the route by which it would be right to consider and decide this issue, which is a lawful constitutional referendum, is blocked ... the choice is then simple: We put our case to people in an election or we give up on Scottish democracy and I want to be very clear today I will never, ever give up on Scottish democracy.""