The Prime Minister is hosting a PM Direct event at the factory of a defence contractor in Glasgow.
He opened by praising the "incredible periscope" aboard HMS Victorious - the nuclear submarine he visited earlier - which was manufactured by the firm that is hosting his talk.
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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.