Jeremy Bamber fails in appeal bid against life sentence

• Jeremy Bamber denied shooting his adopted parents, sister and her six-year-old twin sons in 1986

• Killer vows to continue campaign against his whole life tariff sentence

• Criminal Cases Review Commission dismisses appeal as ‘pure speculation’

He was convicted of murdering give of his relatives more than 25 years ago.

The notorious inmate is serving a whole life term for the 1985 killings.

But he has always protested his innocence and claims his schizophrenic sister Sheila Caffell shot her family before turning the gun on herself in a remote Essex farmhouse.

The Criminal Cases Review Commission said that after a lengthy and complex investigation, it “has not identified any evidence or legal argument that it considers capable of raising a real possibility that the Court of Appeal would quash the convictions”.

The Commission said this was its final decision in its longest-running case.

Iit said: “Matters of pure speculation or unsubstantiated allegation constitute neither new evidence nor new argument capable of giving rise to a real possibility that the Court of Appeal will quash a conviction.

“Neither can such a real possibility arise from the accumulation of multiple unsubstantiated allegations.

“The Commission is satisfied that nothing in the submissions made by and on behalf of Mr Bamber or any issues raised in the recent documentary can, either individually or cumulatively, give rise to a real possibility that the Court of Appeal would find any of Mr Bamber’s convictions to be unsafe.”

Mr Bamber was told of the decision in prison today, the Commission confirmed.

A spokesman added: “This is a final decision and brings to a close the Commission’s current longest running case.

“The Commission has given due consideration to all the submissions made, old and new, before making a final decision on whether to refer the case to the Court of Appeal.”