The Treasury and Scottish Government have clashed over whether Scotland should keep the pound if the country votes for independence.
Chancellor George Osborne said: "I want the best for Scotland and for all our United Kingdom. We're better together."
Scottish Finance Secretary John Swinney said Scotland could walk away from its share of the UK's debts if the Westminster government refuses to come to "a rational and considered agreement".
Debi Edward reports:
More top news
In other words, the Prime Minister will say that leaving the EU would not lead to a single EU law being abolished instantly.
Reclaim the Power stage a protest at Heathrow against a new runway or further airport expansion.
A colder night ahead as temperatures fall.