BBC News Published image copyrightThames Valley Police image captionBenjamin Field (right) was jailed for the murder of Peter Farquhar (left) but has made an attempt to have his conviction overturned A churchwarden jailed for killing an author to inherit his estate has made an attempt to have his murder conviction overturned. Benjamin Field, 30, was jailed for a minimum of 36 years in 2019 for the murder of 69-year-old Peter Farquhar in Maids Moreton, Buckinghamshire. His barrister told the Court of Appeal the conviction was "unsafe" as the trial judge misdirected the jury. The Crown Prosecution Service disputed the claim. image copyrightThames Valley Police