A former nurse serving a life sentence for murdering two patients is set to launch an appeal against his conviction at the Appeal Court in London tomorrow.

Benjamin Geen, was jailed for life in May 2006 after he gave 17 patients injections to stop them breathing.

David Onley, 75, of Deddington, and Anthony Bateman, 65, of Banbury, died after the injections at The Horton Hospital.

Geen denies the killings and is expected to challenge the verdicts reached by a jury at Oxford Crown Court in 2006 as unsafe.