Norwegian mass killer Anders Behring Breivik lost a human rights case on Wednesday when an appeals court overturned a lower court verdict that his near-isolation in a three-room cell was inhuman.

Left-winger Jeremy Corbyn was re-elected British Labour leader on Saturday, seeing off a challenge from MPs but leaving the opposition party split as critics said it was even further from power than before.

London's mayor called on fellow members of Britain's opposition Labour Party to replace leader Jeremy Corbyn, saying his failure to drum up support for Britain remaining in the EU showed he could not command the backing of voters.

Turmoil unleashed by Britain's vote to leave the EU engulfed the opposition Labour Party while policymakers as far away as China, Japan and South Korea fretted on Sunday over the threat to global financial stability, hours before markets reopen.

The health policy chief of Britain's Labour Party resigned on Sunday, saying the country needed a credible opposition after voting to leave the European Union and that she did not believe party leader Jeremy Corbyn could provide it.

A 52-year-old man was due in court on Saturday accused of the murder of British lawmaker Jo Cox in an attack that has brought campaigning for next week's referendum on European Union membership to a standstill.

Queen Elizabeth unveiled plans by British Prime Minister David Cameron to overhaul prisons and help the poor under a social reform agenda he hopes to press after a referendum on European Union membership.

New London mayor Sadiq Khan said on Wednesday that he was not a Muslim leader but represented everyone in the city, after making history by becoming the first mayor of his faith in a major Western capital.