A Blackheath murderer has been jailed for stabbing his girlfriend to death while she was on the phone to police.

Kevin O'Regan, 37, of Birdbrook Road, was jailed for a minimum of 20 years after being found guilty at the Old Bailey of murdering Donna Williamson.

Donna dialled 999 at about 11.20pm on Friday, August 12 last year from her flat in Somertrees Avenue, Grove Park.

She was in her flat with O'Regan, who had been her boyfriend since about 2010, and told police he was beating her and was reaching for a knife.

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Flowers left at the scene of the murder.

The call operater heard screaming and O'Reagan threatening the victim sayng "you're dying...you're dying mate" and that she deserved it.

He stabbed her while she remained on the line.

Police immediately attended and found Donna's body in the communal hallway to the flats.

O'Regan told officers he had killed Donna with a kitchen knife. The weapon was recovered from a sink.

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A post-mortem examination revealed Donna had been stabbed twice, the knife piercing her heart and lungs.

Neighbours heard sounds of a disturbance shortly before Donna was murdered, with O'Regan accusing her of seeing other men at the flat.

The court heard the pair had a turbulent relationship.

Detective Inspector John McQuade, from the Met's Homicide and Major Crime Command, said: "In court O'Regan claimed that Donna had reached for a knife and she had been stabbed accidentally as they struggled.

"The jury chose to believe the prosecution's account that, fuelled by alcohol and jealousy, O'Regan attacked Donna that night.

"I am pleased at O'Regan's conviction and sentence for the sake of Donna's grieving family."