Prison officer Richard Trunkfield, 31, from Northamptonshire, has admitted at the Old Bailey leaking information about a high-profile prisoner while working at high security Woodhill prison, near Milton Keynes to The Sun newspaper.
Former police officer Alan Tierney, from Hayling Island, Hampshire, has been released on bail after admitting to selling information about the arrests of John Terry's mother and Rolling Stone Ronnie Wood to the Sun newspaper.
Tierney will to be sentenced on March 27. Mr Justice Fulford, sitting at the Old Bailey, warned him that "all options remain open". Tierney pleaded guilty to two counts of misconduct in public office.
Former police officer Alan Tierney admitted at the Old Bailey selling information about the arrests of John Terry's mother and Rolling Stone Ronnie Wood to the Sun newspaper.
Alan Tierney and Richard Trunkfield were arrested as part of Operation Elveden, which was set up to investigate allegations of newspapers paying police officers for information.
Tierney sold details about Sue Terry and Sue Poole, the mother and mother-in-law of former England football captain John Terry, being arrested on suspicion of shoplifting in Surrey. They accepted cautions.
He also sold details about the arrest of guitarist Ronnie Wood, 65, on suspicion of beating up his Russian lover Ekaterina Ivanova, who is in her 20s. Wood also accepted a caution.
Trunkfield leaked information about a high profile inmate while working at high security Woodhill prison near Milton Keynes.