Grieve accuses Johnson of 'further radicalisation' on Brexit by strengthening stance on Irish backstop 25
Calls for SNP to outline alternative proposals for independence if new prime minister blocks referendum 155
Fewer than half of Conservative members have cast their vote in leadership contest, party sources suggest 9
Leaker of ambassador's private dispatches should be 'hunted down and prosecuted,' says Boris Johnson 19
Brexit has put relations between London and Edinburgh 'under pressure like never before,' says Wishart 2
Major warns Johnson of legal challenge if he decides to shut down Parliament to force through Brexit 16
