He's got a bit of a problem there, even if he does try and pull back the retoric. Both the EU referendum (if the vote goes for leaving in England but not Scotland) and scrapping the Human Rights Act have the potential to force the UK to split, as both would involve Westminster being in breach of the Scotland Act, the Good Friday Agreement and another I can't remember off hand which applies to Wales (sorry Wales), as all three countries were guaranteed the EU courts as an appeals route