You can keep up with the latest from business editor Robert Peston by visiting his blog on the BBC News website.

BBC: Slim chance of bank bonus deal

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

There is of course an uncomfortable feedback loop from the latest disclosures of alleged hacking to the prime minister - in that the deputy editor of the News of the World in 2002 was Andy Coulson, who became editor of the News of the World in 2003, and who also served as Mr Cameron's communications director until he resigned in January.

BBC: News International's Rebekah Brooks 'won't resign'