The family of murdered "Babes in the Wood" victim Nicola Fellows have spoken of their anger after police said there was not enough evidence to prosecute anyone.

Karen Hadaway, ten, and Nicola, nine, were strangled in Wild Park, Brighton, in 1986.

Russell Bishop was charged with double murder but acquitted by a jury at Lewes Crown Court.

In 2002, in the light of plans to abolish the double jeopardy rule, which prevented suspects being tried twice for the same crime, Sussex Police announced they were re-examining the case. However, officers said later there was not enough new evidence to mount a prosecution.

A spokesman for Sussex Police yesterday refused to say whether the force was looking for anyone else in connection with the murders.

Assistant Chief Constable Nigel Yeo said: "This remains an unsolved case for Sussex Police.

"As with any unsolved case we remain anxious for any further evidence and will regularly review what we have."

Yesterday Nigel Heffron, Nicola's uncle, said he was angry at the decision.

He said the family would be seeking a judicial review, claiming police "haven't carried out a full investigation".

Mr Heffron, 52, from Brighton, who works for the health service, said: "We are frustrated and annoyed with Sussex Police. We want justice for both the little girls.

"It might be years later and harder to look at evidence but what are the police for if not to investigate these things?

"If they think we will just let them forget about this they haven't learnt anything about our family. We will not be going away and will fight until justice is served."

The bodies of Karen and Nicola were found together on October 10, 1986.

Bishop, who knew both girls and their families and had helped in the search, was arrested two months later but cleared of the killings at his trial in 1987.

He was jailed in 1991 for kidnapping and sexually assaulting a seven-year-old girl from Brighton. He has always denied killing Karen and Nicola.

In July Nicola's family launched a campaign to try to stop Bishop getting parole.

In April last year the family were given renewed hope when the double jeopardy rule was abolished under the 2003 Criminal Justice Act.

For 800 years up until that point no one could be tried again if they were acquitted of an offence, even if new evidence, such as confessions, came to light.

Legal history was made on Monday when William Dunlop, 43, who was cleared of strangling 22-year-old Julie Hogg 15 years ago but later confessed to the crime, was convicted at the Old Bailey of her murder.