This deals a blow to Prime Minister Theresa May, who had argued that the government on its own could trigger "Article 50" and start the divorce with the European Union, despite criticism that this was unconstitutional.
The government has said it plans to appeal, Frank reports.
He said the High Court judges "gave a comprehensive ruling on many points, many of which could cause the government's argument to fail".
The feeling is that many Leave MPs will accept the outcome of the referendum but will use any debate on Article 50 as a chance to get the government's plans into the open and mitigate the impact of a hard Brexit.
This means the government can not trigger Article 50 of the Lisbon Treaty - beginning formal exit negotiations with the European Union - on its own. If the appeal succeeds, Britain will go ahead with its timetable and activate Article 50 by the end of March.
Remember when the British people voted in favour of Brexit - the exit from the European Union - in June?
Nigel Farage, who campaigned for Britain to leave the European Union, says he is now anxious that politicians will try to block or delay Britain's exit from the bloc, following a court ruling against the government's plans to start exit talks.
He urged all MPs to "put the will of their constituents before their own views" and publically declare their intetion to honour the referendum result.
British Prime Minister Theresa May on Thursday moved to dismiss talk of an early general election despite a High Court ruling that Parliament must vote on whether to start the Brexit process.
The pound - which has tumbled to multi-year lows since June's referendum to leave the European Union - soared against the dollar and euro, standing at $1.2474 in Asian trade on Friday.
SKY NEWSMr Farron has been a vocal supporter of Remain and a second referendum
Opposition Labor leader Jeremy Corbyn, whose party opposed Brexit, said he respected the decision of the British people.
The government is appealing Thursday's decision to the Supreme Court.
"The result today is about all of us", she said.
I also can't help but think that there are a lot of MPs who say they're for Brexit but would welcome an excuse to kill it. "It's about our United Kingdom and all our futures".
Prime Minister Theresa May has said she will launch exit negotiations with the European Union by March 31. "Leave" campaigners say any attempt to do that would be a betrayal of voters' decision.
"At some point Article 50 has to be triggered".
According to the data provided by Deputy Political Editor at The Times Sam Coates, some parliamentarians will not support the act of parliament if the government doesn't reveal the details of its Brexit negotiating stance.
You might be wondering why the High Court made the decision it did?
But pro-Brexit Conservative lawmaker David Davies said the ruling reflected "unelected judges calling the shots". "If this is so, they have no idea of the level of public anger they will provoke", Farage said in a statement.
Confirmed cluster of polio-like 'mystery illness' in Washington State
Like polio, AFM affects the body's nervous system - specifically the spinal cord - and can cause lifelong paralysis. Scientists are working to determine the exact cause of the AFM, but they do know its not contagious.