DAVID Mundell has given the clearest indication yet that he would quit as Scottish Secretary if the UK stayed tied to EU fishing policies and quotas beyond the end of the transition period in December 2020. . https://www.heraldscotland.com/news/17234266.david-mundell-signals-he-would-resign-if-theresa-may-tied-uk-fishing-to-eu-rules-beyond-transition-period/