Ed Miliband has appealed to Labour voters in Scotland to get behind the 'No' campaign, and oppose the break up of the union.
Alex Salmond claims Labour supporters worried about the prospect of another Conservative government are turning to the 'Yes' campaign.
ITV News correspondent Martin Geissler reports from Lanarkshire:
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It will be a cold start to Wednesday across many southern areas but with some early sunshine to enjoy.
Ambulances are struggling to hand patients over to A&E departments within target times, MPs warn.
Zac Goldsmith hopes to be reinstalled as Tory MP for Richmond Park - months after he quit the party and forced an unsuccessful by-election.