Families' plea for victims' bodies

Bonnie Barrett and Xiao Mei Guo both went to Brown's London flat

The families of the two women killed by serial sex attacker Derek Brown have appealed for him to reveal what he did with their bodies.

Brown, 47, was convicted of killing Xiao Mei Guo, 29, and Bonnie Barrett, 24, after taking them back to his flat in Rotherhithe, east London.

As the killer was found guilty, Mrs Guo's husband and Ms Barrett's mother, who were present in court, spoke of the pain of trying to come to terms with their deaths.

Despite an extensive search the bodies of the women, who police believe were killed in Brown's flat, have never been found.

In a victim impact statement read in court, Jin Hua Guo, 31, recounted fond memories of his wife and the mother of his sons, who the couple had to leave behind in Fujian region of southern China with relatives when they were smuggled to the UK.

'Clutching memories'

Mr Guo said: "The children repeatedly ask me the question 'Where is mum? We haven't spoken to her for a long time? We miss her. Can we talk to her?'

"I have no courage to tell them that their mother was murdered and dismembered and will never be found.

We were always holding hands no matter how difficult the situation was Jin Hua Guo

"I don't want them to go through the same pain I am now suffering.

"We want her body so my children and I can say goodbye. This man has deprived me of that to conceal his own guilt.

"I still cannot believe that I have lost my beloved wife. Most of the time I remember her face and sometimes I can still feel her warmth.

"I am still clutching her memories. It seems that is all I am left with.

"I have listened to the events that led to my wife's murder and tried to understand why this monster killed two innocent women."

Mr Guo said he and his wife were forced to migrate in 2006, leaving their sons aged 11 and 12 after their business failed.

Brown has never revealed what happened to the women

Reliving the memories of their time together, he said: "We fell in love at first sight.

"I still remember the first moment I saw her. She was very beautiful and always with a smile on her face.

"She was my dream and my future. We were always holding hands no matter how difficult the situation was.

"She will be in my heart forever."

Ms Barrett's mother, Jackie Summerford, faced her daughter's killer and told the court how the death of her "precious little girl" devastated her.

'No angel'

Ms Barrett, who was a crack cocaine addict and a prostitute, left behind a six-year-old son.

Ms Summerford said: "I am asking you, Derek Brown, to tell me where my daughter is so we can lay her to rest."

"She was no angel but she'd just started to get help before she got killed.

"She wanted to stop taking drugs.

We will never understand how any human being could commit such a hideous crime on another Jackie Summerford

"She wanted her life back and wanted to make it up to her family. She made plans to improve her life but she never got the chance.

"She is an angel in our eyes and in our hearts. I feel like somebody has reached into my chest and pulled out my heart.

"We will never forget what my daughter went through at the hands of that man.

"We will never understand how any human being could commit such a hideous crime on another."

Ms Summerford also told the court how her daughter's death left her feeling suicidal but she has kept going for the sake of her grandson.

She added that her daughter became an addict after a violent relationship.