The Prime Minister has ordered an inquiry into the tactics used by trade unions, following claims of intimidation during the dispute at the Grangemouth oil refinery, in Scotland.
But the move has been dismissed, by union leaders, as an election stunt.
ITV News Political Correspondent Carl Dinnen reports:
More top news
ITV Border Political Editor Peter MacMahon says it's far too early to call this referendum.
A World War Two veteran has told ITV News he has fulfilled a boyhood dream by voting for an independent Scotland.
Keep on top of the referendum results as they are announced from 32 counting stations across Scotland.