Britain's most senior judges will rule if Theresa May has the power to trigger the formal process for the UK's exit from the European Union.
Yes Scotland Campaign Comes To End
Yes Scotland has brought its campaign for Scottish independence to a close, with a message to supporters to join a nationalist party and "keep the spirit alive''.
In his last message to supporters as the referendum year comes to an end, chief executive Blair Jenkins said "this chapter'' of the independence campaign is over. Scotland voted no to independence in September's referendum.
But he has urged supporters to join the Scottish National Party, the Scottish Greens or the Scottish Socialist Party to ensure that "the work continues''.
"This chapter of the campaign for independence is over,'' he said.
"But the work continues and I don't want you to miss out on the chance to stay involved.
"That's why I'm writing to encourage you to pass your details on to one of the many groups which were involved in Yes.
"SNP membership is more than 94,000 and still growing. The party is midway through selecting Westminster candidates and will be launching groundbreaking initiatives in the New Year to ensure that members get every chance to contribute their time and ideas to the campaign. Join the SNP.
"The Scottish Greens have seen their membership grow by more than 500% and are also selecting candidates for what will be their biggest Westminster campaign yet.
"The party now has branches across the whole of Scotland, campaigning on issues such as fracking, TTIP and the Living Wage. Join the Scottish Green Party.
"The SSP has also seen an increase in membership and a continued interest in campaigning. Join the SSP.
"Of course we can't forget our friends at National Collective, Women for Independence, Business for Scotland, Radical Independence Campaign and Generation Yes.
"This will be the last email from Yes Scotland and I want to thank you for everything you have done.
"I have one final ask. Don't lose touch with the broader campaign. Make your final action of this year joining the SNP, Scottish Greens, SSP or one of the many non-party campaign groups in the movement.
"Let's keep the spirit and the positivity of the Yes campaign alive.''
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Projects helping young Scots to take greater control of their futures are to share more than £800,000 in lottery funding.
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