A woman who was sexually abused as a child by her step-father has spoken out for the first time after a confession to her fiancé led to her attacker being jailed. Kim Hill, from Suffolk, has bravely waived her right to anonymity and spoken about how she was abused by Derek Osborne from the age of four. The now 31-year-old revealed she was forced to dress up in her mother's lingerie at the age of eight, and was even made to watch pornographic films. Kim Hill (left) was abused for years by her step-father but never revealed her past until her partner Rob (right) encouraged her to approach the police about her attacker. The couple pictured on their wedding day in 2013 . For years, Kim bottled up the painful memories until she met her husband Rob, 34, who guessed that she had been abused and helped to put Derek behind bars 20 years after the offences. While planning their wedding in 2013, Rob asked his fiancée if she had been abused as a child due to her withdrawn nature. His question finally prompted Kim to confess what happened to her. The mother-of-two says that Rob's question finally gave her the nudge that she needed to reveal her past. 'I'd waited my whole life to hear that question. I was desperate for someone to bring it up, so I could tell them the truth. Derek Osborne (left) abused Kim (right as a child aged seven) from a young age encouraging her to get into his bed for 'cuddles' At the age of nine Derek (pictured) forced Kim (pictured left as a child) to dress up in her mother's lingerie and watch porn films . 'When Rob asked me it was my chance to share the painful secret I'd been hiding – that the man I had called dad had abused me.' She told Rob how her step-father made her climb into bed with him and kiss and cuddle him. He even attacked her two days after her 12th birthday, while taking her out for a celebratory meal. Speaking about the abuse, Kim, who married Rob in 2013, said: 'I didn't know any different so I accepted what he was doing as normal. 'I saw him as my dad. I just thought my dad loved me very much.' Kim's biological father died when she was young and she was aged three when Derek began a relationship with her mother. She says that as a young child Derek's attention was originally welcomed in her large family. 'I scrambled for mum's attention with my three siblings. But I was always Derek's favourite. 'He'd come and tuck me into bed while Mum watched television downstairs.' But the attention soon turned sexual. She said: 'He would kiss me on the lips. Kim never revealed her past until Rob asked her if she had been abused ahead of their wedding . 'He often called me into his bed at night for a cuddle, so he could touch me under the covers. 'I was too young to know how wrong it was. I thought nothing of it. But years went by and the touching became more intimate.' Aged seven, Kim was taught sex education at school which soon made her realise that her step-father's actions were not normal. She said: 'I found out at school how babies are made. 'I was horrified, all I could think was, "What if I have a baby growing inside me?" 'I knew how upset mum would be if she found out and I'd get into so much trouble.' Kim was too scared  to approach anybody about her attacker and the abuse continued. She said: 'When I was nine, he forced me to dress up in mum's underwear, then he made me watch sick porn films. 'I didn't know any different so I accepted it as normal.' But that all changed when aged 10, Kim saw a television programme about sexual abuse. She said: 'I couldn't believe what I was seeing. I realised my dad was abusing me. 'Next time he tried to touch me I was in tears and pushed him away. Although he was angry, I stood my ground. Part of me wanted to tell mum, but I didn't want to hurt her.' But weeks later, her mother sat her down with some news that would come as a welcome relief. 'She told me that her and my stepdad were splitting up. Finally, I could escape him.' However to Kim's horror her mother wanted to keep Derek around as a father figure. For her 12th birthday, he took her out for a celebratory dinner. But he pounced when they were alone at his house afterwards and performed a sex act on her. She said: 'My feet were kicking as hard as I could but I wasn't strong enough to push him away. 'A look of anger spread across his face as he tried to hold me down. 'After, I felt disgusting. That was the last time he abused me. Afterwards he moved away with a new partner.' Ahead of the wedding Kim reported the abuse to the police where it was revealed Derek had abused other girls . Although she had finally escaped her attacker Kim was still living with the effects of the abuse. She said: 'I'd become so withdrawn, and jumped whenever anyone brushed past and touched me.' Although Kim met a man aged 18 and had a daughter at 23, the relationship did not work out. She found it difficult to trust and stayed away from the dating scene until a friend set her up with Rob. She says that right from the start Rob offered her huge support and she found him trustworthy. 'I wasn't sure and it was the first proper date I'd had since having my little girl. 'He talked about his sister, who's also a single mum and how difficult she's found it. 'From the very beginning, Rob was so understanding.' Kim and her daughter moved in with Rob after six months and just weeks later in August 2010 he proposed. Kim said she was able to seek justice after confessing all to Rob. Pictured on their wedding day . Kim has began to visit counselling sessions and says she is beginning to move on . The couple had a son in January 2012 and started planning the big day. She said 'Me and Rob shared everything, but I still didn't dare tell him what dad had done. We'd started making plans and wanted the perfect venue.' While searching for wedding venues, Rob asked her if she had been abused as a child. The question came as a huge shock to Kim. She said: 'I broke down in tears. I didn't know how he could guess. 'He said that I was different to other women because I was withdrawn. He encouraged me to tell mum what had happened. 'And with his support the next day I called the police.' After her brave confession Kim discovered that she was not alone and Derek had attacked a string of victims. 'I was the first victim to come forward but soon other victims spoke out and said Derek had abused them too. ' Kim has started her own blog to share her experiences and inspire others . When he was arrested, Derek denied all the offences and even claimed one of the girls had made sexual advances towards him. With the trial looming, in September 2013 Kim and Rob tied the knot. She said: 'I didn't think of Derek once. He might have destroyed my childhood, but he wasn't going to ruin the best day of my life.' In May 2014, Derek, then 72, of Lowestoft, Suffolk, appeared at Ipswich Crown Court where he admitted 16 counts dating from 1982 and 2004, including eight of indecent assault and seven of indecency with a child, related to Kim and two other schoolgirls. He also admitted raping another woman. He was jailed for 21 years. In October 2014 one count of gross indecency with a child, not relating to Kim, was quashed at the Court of Appeal in London, but his sentence remained the same. Kim said: 'I went to see him sentenced. He was so pathetic and frail, he was unrecognisable.' Judge John Holt said Derek's victims had all suffered 'devastating' psychological effects. He said a probation officer who interviewed Derek had assessed him as 'dangerous' and said he had shown 'very little' genuine remorse. Now he is behind bars, Kim says that she has been able to begin to move on. 'I've started counselling and healing sessions with the Happiness Foundation. They're helping me to accept it and move on. 'Rob is there with me every step of the way and I know he's so proud. I've also started a blog about everything I've been through. 'I've had so many victims of sexual abuse thank me for telling my story and showing you can put your abuser behind bars – even years later.'
Kim Hill was abused by her step-father from a young age . He forced her to wear lingerie and watch 'sick porn' films aged nine . Kim never revealed what had happened until she met her husband Rob . With his encouragement Kim reported her abuser and saw him sentenced . Derek Osborne was jailed for 21 years in 2013 aged 72 . He confessed to abusing other girls as well as raping another woman . Kim has now set up a blog to help other victims of sexual assault .