Chancellor George Osborne's expected to rule out the possibility of an independent Scotland keeping the pound when he makes a speech in Edinburgh later.
Nationalists say the UK government is bluffing and that a currency union is the best option.
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Kerrie brings you Sunday's pollen count
Kerrie brings you Sunday night's forecast
High pressure rebuilds from Monday. Any cloud and rain move westwards. Some low cloud for eastern coasts. Very warm inland