Plans to release from prison a man who shot dead a police officer in Caterham 36 years ago have been criticised by the Police Federation.

Egon Von Bulow was sentenced to life imprisonment for murdering PC John Schofield on 6th July 1974 and wounding two other officers.

The Parole Board has cleared Von Bulow, who is in his 60s, for release.

But Simon Reed of the Police Federation said Von Bulow was "vile and vicious" and should never be let out.

Simon Reed, vice chairman of the Police Federation said anyone convicted of murdering a police officer should spend their life behind bars.

He said: "Together with colleagues across the country, we are absolutely horrified that Von Bulow is likely to be released from prison."

Mr Reed described Von Bulow as "vile, vicious and unrepentant" and said his release would make a "mockery" of the justice system.

Surrey Chief Constable Mark Rowley said the proposed release of Von Bulow had surprised and concerned his officers.

"I understand and share the reaction of the officers of the force," he said.

PC Schofield was on patrol in Caterham with two colleagues when they became suspicious of Von Bulow, who was carrying a gun concealed in a large holdall.  When they pulled up alongside him, Von Bulow shot PC Schofield dead and injured his two colleagues.

Von Bulow was arrested six days later on the day of PC Schofield's funeral at St Mary's Church in Caterham-on-the-Hill.

A spokesman for the Ministry of Justice said the release of prisoners serving a life sentence was a matter for the Parole Board.  "All life prisoners have to adhere to strict conditions and are subject to recall for the rest of their lives", he said.