the UK Supreme Court case information regarding the Article 50 Brexit protocol. Basic question, do you need to get Parliament's OK before triggering Article 50 procedures?

the UK Supreme Court case information regarding the Article 50 Brexit protocol. Basic question, do you need to get Parliament's OK before triggering Article 50 procedures? Info link here


https://www.supremecourt.uk/news/article-50-brexit-appeal.html
The second link is the web cast of the proceedings. They had to break it up into multiple sections because of the sheer volume of the interested parties. I will leave the link to that here as well

https://www.supremecourt.uk/cases/uksc-2016-0196.html
The set up of the Supreme Court of the UK looks extremely familiar. Little known fact, we helped the UK set it up. They used Canada, New Zealand and Australia as a template.