Former detective constable Maggie Oliver has revealed how she wrote to 'my Rochdale girls' before entering the Celebrity Big Brother house as she is tipped to win this year's show.
Ms Oliver, who won the confidence of abused girls to persuade them to talk to police, said she had written to the victims because she didn't want them to feel let down by her.
She was one of the first housemates to join the Channel 5 reality show during its live opening on Tuesday night and has become an early favourite to win the show.
Maggie Oliver, who helped expose the Rochdale child sex abuse ring, was one of the first to enter the CBB house during the launch last night
As she headed into the CBB house last night Ms Oliver told host Emma Willis how the victims of the Rochdale sex scandal still held a special place in her heart.
She said: 'There's something I would like to say as it's a burning feeling in me that I really wanted to go and tell my Rochdale girls that I was coming on here, because the last thing I want is for them to feel let down by me.
'They are very close to my heart.'
She added: 'I have written all of them a letter, so girls, you'll be getting a letter tomorrow morning.'
Ms Oliver resigned after 16 years with the police following its handling of the sex abuse scandal in Rochdale
Ms Oliver was the police detective who persuaded young girls who were being sexually abused in Rochdale to speak to police.
The victims were white, working class and predominantly from broken or chaotic homes.
The scandal culminated in ringleader Shabir Ahmed ('Daddy') and eight accomplices, many of them taxi drivers, being jailed for a total of 77 years in 2012.
Ms Oliver's appearance on the show won the approval of former Association of Police and Crime Commissioners chief executive Nazir Afzal
Women's mental health group Wish also praised Ms Oliver as she entered the CBB house
All but one of the perpetrators were originally from Pakistan.
The ex-officer, who resigned after 16 years with the police following its handling of the sex abuse scandal, was later portrayed by actress Lesley Sharp in the three-part BBC dramatisation Three Girls.
Ms Oliver's appearance on the show won the approval of former Association of Police and Crime Commissioners chief executive Nazir Afzal.
He wrote on Twitter: 'Delighted to see Maggie Oliver is in the house! Maggie & Sara brought the Rochdale grooming gang to my team & ultimately saved dozens of young women from further abuse.'
Ms Oliver revealed to host Emma Willis how she had written to the victims of the Rochdale grooming ring she helped uncover in 2008
The ex-officer was portrayed by actress Lesley Sharp in the BBC dramatisation Three Girls
As the show marked the centenary of women winning the right to vote in the UK with an all-female initial line-up, viewers took to Twitter to nominate Ms Oliver to win the whole programme.
She's also the early bookmakers favourite to win the reality show.
One viewer commented: 'Maggie Oliver to Win Celebrity Big Brother! She has actually done something amazing and so much respect for her!'
'She is a SUPER HERO and i pray to god she wins CELEBRITY BIG BROTHER 2018,' wrote another. 'She deserves all the luck and fortune she can get. This lady living breathing Angel. GOOD LUCK MAGGIE we are all behind you.'
One commented: 'Wishing Maggie the best of luck in the all-female Celebrity Big Brother house! #CBBMAGGIE #yearofthewomen.'
Another posted: 'Wow! Maggie Oliver simply has to win Celebrity Big Brother she is such an amazing woman who fought against so much to get justice. What a woman!'
Hoping that the 62-year-old's background will bring an interesting dynamic to debate in the house, one viewer responded: 'I like Maggie. This could be like when Big Brother first started. When there was genuine interesting conversation as well as the other stuff. #cbb.'
Viewers took to Twitter to nominate Maggie Oliver to win the whole programme
This series' contestants include former MP Ann Widdecombe, journalist Rachel Johnson and transgender newsreader India Willoughby.
They are joined by former Made in Chelsea star Ashley James, former Coronation Street actress Amanda Barrie, Californian Malika Haqq – who last night claimed she is Khloe Kardashian's 'professional best friend' – and Jess Impiazzi, who has appeared in The Only Way is Essex as a 'Sugar Hut honey' and Ex On the Beach.
The show will explore how the all-female housemates interact as they have the run of the house before the men arrive.
Barrie and Impiazzi earned immunity from the first evictions by winning the series' first task moments after entering the house.
Former England and Liverpool footballer John Barnes was today revealed as the first male star who will enter the CBB house.