Background: Sutcliffe was born in Bingley in the West Riding of Yorkshire to a working-class family. He was given a Catholic upbringing by his parents, John William Sutcliffe and his wife Kathleen Frances (nee Coonan). Reportedly a loner, he left school aged fifteen and had a series of menial jobs, including two stints as a gravedigger in the 1960s. Between November 1971 and April 1973, Sutcliffe worked at the Baird Television factory on a packaging line.
Context: An application by Sutcliffe for a minimum term to be set, offering the possibility of parole after that date if it is thought safe to release him, was heard by the High Court of Justice on 16 July 2010. The High Court decided that Sutcliffe will never be released. Mr Justice Mitting stated:  This was a campaign of murder which terrorised the population of a large part of Yorkshire for several years. The only explanation for it, on the jury's verdict, was anger, hatred and obsession. Apart from a terrorist outrage, it is difficult to conceive of circumstances in which one man could account for so many victims.  Psychological reports describing his mental state were taken into consideration, as was the severity of his crimes. Barring judicial decisions to the contrary, Sutcliffe will spend the rest of his life in Broadmoor Hospital. On 4 August 2010, a spokeswoman for the Judicial Communications Office confirmed that Sutcliffe had initiated an appeal against the decision.  The hearing for Sutcliffe's appeal against the ruling began on 30 November 2010 at the Court of Appeal. It was rejected on 14 January 2011. On 9 March 2011, the Court of Appeal rejected Sutcliffe's application for leave to appeal to the Supreme Court.  In December 2015 Sutcliffe was assessed as being "no longer mentally ill". In August 2016, a medical tribunal ruled that he no longer required clinical treatment for his mental condition, and could be returned to prison. Sutcliffe is reported to have been transferred from Broadmoor to Frankland Prison in Durham in August 2016.
Question: What was he appealing?. Whats the answer?
This was a campaign of murder which terrorised the population of a large part of Yorkshire for several years.