Rival campaigns restart in wake of MP's murder

The campaign to decide Britain's membership of the European Union restarted on Sunday after a three-day hiatus following the killing of lawmaker Jo Cox, with Prime Minister David Cameron warning that Britons faced an "existential choice" on Thursday.

Campaigning activities ahead of the June 23 referendum resumed as two opinion polls showed the "Remain" camp recovering some momentum, although the overall picture remains one of an evenly split electorate.

With five days left until Britons cast their ballots, the rival campaigns returned with a raft of interviews and articles in Sunday's newspapers, covering the familiar immigration versus economy debate that has defined the campaign so far.