After Sam Hallam is released from six years imprisonment for a crime he did not commit, Simon Israel, home affairs correspondent for Channel 4 News, reflects on miscarriages of justice.

Sam Hallam's conviction for the murder of a trainee chef Essayas Kassahun in London in 2004 goes before judges at the court of appeal for the second time tomorrow.

Another Metropolitan police officer has been suspended for alleged racist comments.

Channel 4 News has learned that human error at a private forensic services lab is being blamed for DNA contamination that led to the wrong man facing trial for rape, writes Simon Israel.

The coroner in the inquest of Gareth Williams says we may never know how the MI6 codebreaker whose body was found in a locked holdall met his end.

The Ministry of Defence announces six possible missile launch sites, including several in residential areas, to protect the skies over London during the Olympic Games.

The scandal of alleged racism which has engulfed Scotland Yard took yet another twist tonight, as Channel 4 News's Home Affairs Correspondent Simon Israel reports exclusively.

As former police chief John Yates defends helping to find a job for Neil Wallis's daughter, emails seen by Channel 4 News suggest the referring of friends for jobs was commonplace at the Met.

Palestinian activist Sheikh Raed Salah wins an appeal against deportation from the UK, but a Jewish group has reacted with disappointment at the decision.

DNA evidence in the death of MI6 agent Gareth Williams is contaminated and its reliability questioned by the coroner examining the discovery of Williams' body, found naked and padlocked in a gym bag.