A convicted murderer who was found guilty of killing five of his relatives 37 years ago may be innocent, a regional publisher’s new investigation has claimed.

A new True Crime Newsquest documentary mini-series has re-examined the case of the White House Farm murders, in Essex.

Jeremy Bamber is serving a life tariff in a maximum security prison for the killings of five of his family members at a home near the village of Tolleshunt D’Arcy in August 1985.

The 61-year-old was convicted of murdering his adoptive parents, Nevill and June, both 61, his sister, Sheila Caffell, 26, and her six-year-old twins, Daniel and Nicholas.

But he has always protested his innocence and claims that Ms Caffell, who suffered from schizophrenia, shot her family before turning the gun on herself.

Newsquest investigation editor and retired detective Mark Williams-Thomas has now looked at the evidence in the case to see whether Bamber is right to protest his innocence.

Mark, who is best known for exposing Jimmy Savile as a paedophile in ITV’s The Other Side of Jimmy Savile, believes the Bamber case could be one of the biggest miscarriages of justice in the UK.

The first episode of the three-part mini-series is available now on YouTube. Parts two and three of the series, which feature the results of a polygraph test and new evidence, will be released on 29 November and 6 December respectively.