The arrest followed search warrants at two addresses in the Wiltshire and Camden areas, police said
Vikram Dodd is the Guardian’s crime correspondent.
Peter Mandelson was led to a waiting car by detectives without being placed in handcuffs. This is after police assessed the former cabinet minister did not present a risk of violence or trying to flee.
Met detectives investigating Mandelson have had discussions with lawyers from the special crime division of the Crown Prosecution Service, which authorises criminal prosecutions in England and Wales.
As yet the discussions are described as informal, but no formal early investigative advice has yet been sought nor offered.
