Vulnerable man confessed to murder in 11th of 14 ‘relentless’ interviews, court hears

Expert witness says he raised concerns about police questioning with Oliver Campbell’s lawyers before trial

An expert witness in the case of a vulnerable man convicted of murder wrote to the man’s lawyers raising serious concerns about police conduct in “relentless” interviews, but never received a reply.

Oliver Campbell, 53, who sustained a brain injury as a baby, was subjected to 14 police interviews over three days when he confessed to murder in 1990. His case is being considered by the court of appeal after a referral by the Criminal Cases Review Commission.