The UK Government faces a wait until next year to find out whether it has won its Brexit challenge at the UK's highest court.
At the completion of four days of detailed legal argument, 11 Supreme Court justices reserved their ruling until the new year.
Watch live as the Supreme Court hears the final day of arguments in the legal battle over the right to begin Brexit.
Judges at the highest court in the land are deciding whether MPs need to approve the triggering of Article 50 - the process for Britain leaving the EU.
Gripping TV it may not have been but the televised four-day hearing was a box office event for fans of legal argument.
The UK's highest court has been told that a motion in Parliament does not have any bearing on the legal issue it is having to decide.
The Supreme Court is hearing an appeal to overturn a High Court ruling that said the prime minister could not trigger Article 50.