pat Mayor warns the SNP want to ' end Britain , to decapitate people ' Says Scottish Nationalists want higher taxes and tax cuts . David Cameron believes England , Wales and Northern Ireland will suffer . Nicola Sturgeon launches manifesto with promises to ' lead ' the United party .
London Mayor warns the SNP want to 'end Britain , to decapitate Britannia ' Says Scottish Nationalists want higher taxes and welfare payments . David Cameron warns England , Wales and Northern Ireland would suffer . Nicola Sturgeon launches manifesto with vow to 'lead ' the United Kingdom .