The Lib Dem leader, Vince Cable, said a referendum should be timed to coincide with EU states’ own votes on the final agreement. Critics have argued that a second referendum would be an incentive for European leaders to give the UK a poor exit deal. The party’s proposed timetable is:April 2018: government introduces a referendum on the deal bill. May 2018: referendum on the deal bill receives royal assentSeptember 2018: a 12-week referendum campaign begins, with a vote scheduled for early December. September-December 2018: the European parliament votes on the final Brexit settlement, and the European Council approves the deal.
Source: The Guardian December 20, 2017 06:00 UTC