With the legality of prorogation being tested in the crucible of the Supreme Court, we welcome Good Law Project director and Remain legal vanguard JOLYON MAUGHAM QC to the studio to discuss exactly what’s at stake. / What does the Lib Dems going broke for revoke mean for future dealings between the Remain parties?

The man leading the constitutional charge against Boris Johnson talks to Prospect about Brexit, the courts and what happens now.