Jeremy Bamber and two other murderers will have their appeal that keeping them behind bars for the rest of their lives is a breach of their human rights heard by the Grand Chamber of the European Court of Human Rights.
Bamber received a life sentence for shooting dead five members of his family in Essex in 1986.
He has always protested his innocence and claims his schizophrenic sister Sheila Caffell shot her parents and her six-year-old twin sons before turning the gun on herself.
Bamber has previously attempted to get his conviction overturned but it has been upheld several times.
More top news
In his first outing since the referendum result, the lead Leave campaigner has outlined his vision for a post-Brexit Britain.
Becoming fresher, unsettled with rain at times as the week goes on.
Parts of the major A1 road have been shut after a sinkhole appeared overnight on Saturday.