The annual march in which loyalists celebrate their ties to the United Kingdom comes as Brexit has created a new border in the Irish Sea — and the future of the U.K. is tenuous.

When the Democratic Unionist party decided to support Brexit, many warned that the decision could have profound consequences for Northern Ireland’s position within the UK.

As some say the call for a border poll on a United Ireland is growing, what would it take to get to that point, and what would it mean to be a Unionist, if the Union no longer exists?

Government breaks its promise on no customs checks in the island of Ireland / Is Johnson throwing Ireland under the Boris Bus (again)? / Priti Patel decides that Britain is not a country but a Russell Group university. / What really makes Dominic Cummings tick? / Chris Southworth of the International Chamber of Commerce gives us the latest on those amazing WTO terms