The latest arrest comes a day after news that the Sun newspaper's Whitehall editor, Clodagh Hartley, Jonathan Hall, a press officer for Her Majesty's Revenue and Customs, and Mr Hall's partner Marta Bukarewicz are to be charged with conspiracy to commit misconduct in a public office.

BBC: New Scotland Yard sign

Traders in the market's 1976 hall urged HM Revenue and Customs to reduce their rates because of the number of empty units in that part of the market.

BBC: Kirkgate Market

In Anchorage, Alaska, a group was planning to converge on city hall to hold a carol-singing protest in defence of Christmas customs they believe to be under threat, such as the habit of wishing someone "Merry Christmas" instead of "Happy Holidays".

BBC: War on Christmas: Is the festival under attack?