Tony Blair and John Major visit Derry to urge voters to oppose Brexit

Two former British prime ministers, John Major and Tony Blair, have warned that a vote to leave the EU would be a “historic mistake” which could threaten Northern Ireland’s hard-fought peace process.

The former adversaries shared a platform at the Ulster University’s Magee campus in Derry, and warned that Brexit could lead to the break-up of the UK.

Mr Major warned that the “wrong outcome on June 23 could “tear apart the UK”. He added: “If we throw the pieces of the constitutional jigsaw up in to the air, no one can be certain where they might land.”