SNP brands royal assent for Brexit bill a 'constitutional crisis' https://www.theneweuropean.co.uk/top-stories/brexit-bill-receives-royal-assent-1-6480288
UK facing constitutional crisis over Brexit bill, SNP Westminster leader says https://www.theneweuropean.co.uk/top-stories/uk-facing-constitutional-crisis-over-brexit-bill-snp-westminster-leader-says-1-6477325
Johnson faces new constitutional crisis over claim of ‘no Brexit delay’ https://www.theguardian.com/politics/2019/oct/04/boris-johnson-new-constitutional-crisis-no-brexit-delay?utm_term=Autofeed&CMP=twt_gu&utm_medium=&utm_source=Twitter#Echobox=1570215343
Boris Johnson could trigger constitutional crisis over Brexit law https://www.theguardian.com/politics/2019/sep/07/boris-johnson-could-trigger-constitutional-crisis-over-brexit-law?utm_term=Autofeed&CMP=twt_gu&utm_medium=&utm_source=Twitter#Echobox=1567885635