A Falkland Islander votes to remain a UK citizen. The Labour leader faces further controversy over the islands Marcos Brindicci / Reuters

One of Jeremy Corbyn’s top aides is understood to have resigned because of internal feuding in the Labour leader’s office.

Neale Coleman, head of rebuttal and a former aide to Ken Livingstone and Boris Johnson, quit after a row with Seumas Milne, the Labour leader’s media and political adviser.

The departure highlights the split in the leader’s office over how left wing the Labour leader should be. A party spokeswoman said it did not comment on staffing issues.

Tensions have been rising for weeks. One senior Labour source said Mr Milne had repeatedly briefed against Mr Coleman and wanted him gone. The insider said: “Seumas thinks he’s head of strategy, head of communications, head of policy and chief of staff all in one.”

Mr Corbyn…