Becky Watts' killers have 'no right to walk the earth', her father tells GMB

Becky Watts' killers have "no right to walk God's green earth", her father has told Good Morning Britain.

Darren Galsworthy said he "hates" murderer Nathan Matthews, who he blamed for "absolutely destroying" their family.

On Wednesday, Matthews was convicted of murdering his 16-year-old stepsister Becky and dismembering her body in a sexually motivated attack.

His girlfriend Shauna Hoare, 21, was acquitted of murder but convicted of manslaughter.

Angie-Mae Galsworthy, Becky's step-mother and Matthews' mother, said "no sentence could be long enough" for what he had done.

"It's not the boy that I knew. I'm still his mother, I still love him. I don't love the monster he turned in to."

Mrs Galsworthy has not spoken to her son since he was arrested in February, but does plan to visit him in prison.

"I'll ask him why, why this happened," she said.

Matthews, 28, arrived at Becky's home in Crown Hill, Bristol on February 19 with a "kidnap kit" containing handcuffs and a stun gun.

He suffocated the 16-year-old in her bedroom during a "violent struggle", stabbed her in the stomach 15 times after her death.

Over the next three days, Matthews dismembered Becky's body and hid his stepsister's remains in a garden shed.

Mr Galsworthy said the bruises on Becky's body showed she had "fought for her life".

He said he never had the chance to fight for his family.

"They've got no right to walk God's green earth than a sewer rat," Mr Galsworthy told GMB.

"I hate him. He's absolutely destroyed my entire family.

"I felt like an empty husk of a man. I felt like I'd let my daughter down.

"Every dad should be able to fight for his family and I wasn't given that choice. In fact they went out of their way to make sure I didn't get that choice."

Mr Galsworthy described the pain of the "betrayal" by Matthews and the strain the trial put on them.

He claimed he even suffered a minor heart attack and had to be rushed to a doctor after listening to Matthews on the stand.

Mr Galsworthy said he was relieved by Wednesday's "bitter sweet verdict".

"We believe that justice has been done," he said. "At the same time we realise we'll never see our daughter again."

Following the trial, James Ireland, 23, and Donovan Demetrius, 30, were both acquitted of assisting an offender.

Matthews and Hoare are due to be sentenced on Friday.