Celebrity Big Brother 20 is the twentieth series of the British reality television series Celebrity Big Brother, hosted by Emma Willis and narrated by Marcus Bentley. The series launched on 1 August 2017, and concluded on 25 August 2017 after 25 days, making this the shortest series since Celebrity Big Brother 12 in 2013. The series was on Channel 5 in the United Kingdom and 3e in Ireland with the spin-off show Celebrity Big Brother's Bit on the Side presented by Rylan Clark-Neal. It was the thirteenth celebrity series and twentieth series of Big Brother overall to air on Channel 5.

During the launch show on 1 August 2017, Willis confirmed that the winner would receive £50,000 for a charity of their choice. This is the first celebrity series to include a prize fund since Celebrity Big Brother 3 in 2005.

On 25 August 2017, Sarah Harding was announced as the winner of the series having received 35.33% of the final vote, with Amelia Lily as the runner-up after receiving 29.92%.

Production Eye logo The eye was released on 19 July 2017 and features a metallic golden eye.

Teasers On 24 July 2017, a three-second teaser was released promoting the series. It includes a swimming pool with a "#CBB" inflatable in the water. The full length trailer was released on 26 July 2017. During the live final of Big Brother 18, a further trailer was released showing glimpses of the celebrities.

House On 1 August 2017, the day of the launch, the official house pictures were released. The house clearly resembles from the one previously used from the last civilian season with boxed interior designs with flat toned colors that spans even with the redecorated garden. The new house includes two bedrooms, "Forest Suite" and "Blossom Suite".

Housemates On Day 1, fifteen celebrity housemates entered the house.

Celebrity Age on entry Notability Day entered Day exited Status Sarah Harding 35 Singer and actress 1 25 Amelia Lily 22 Singer and actress 1 25 Sam Thompson 25 Reality TV star 1 25 Derek Acorah 67 Spiritual medium 1 25 Chad Johnson 29 Reality TV star 1 25 Jemma Lucy 29 Reality TV star 1 25 Shaun Williamson 51 Actor 1 23 Helen Lederer 62 Comedian and actress 1 22 Sandi Bogle 52 Reality TV star 1 22 Paul Danan 39 Actor 1 18 Brandi Glanville 44 Reality TV star 1 18 Jordan Davies 25 Reality TV star 1 15 Trisha Paytas 29 Internet personality 1 11 Karthik Nagesan 34 Reality TV star 1 11 Marissa Jade 32 Reality TV star 1 8

Amelia Lily Amelia Lily is a British singer, known for being a contestant on the eighth series of The X Factor; where she reached the final and finished in third place. Since leaving The X Factor, Amelia released three Top 40 songs in the UK Singles Chart, including "You Bring Me Joy" which peaked at number 2. Lily was also the support act for fellow housemate, Sarah Harding, on her arena tour as a member of Girls Aloud. As an actress, she has appeared in stage shows such as American Idiot on the West End and Joseph and the Amazing Technicolor Dreamcoat on UK tour. She entered the house on Day 1 and left on Day 25 as the runner up.

Brandi Glanville Brandi Glanville is an American television personality, known for being a cast member on the Bravo reality series The Real Housewives of Beverly Hills from 2011 until 2015. Since then she has appeared in the seventh series of The Celebrity Apprentice in 2015 where she placed fourth, as well as taking part in Famously Single in 2016. She is the ex-wife of actor Eddie Cibrian. She entered the house on Day 1 and became the fifth housemate to leave on Day 18. She later appeared in the first series of Celebrity Big Brother in the United States.

Chad Johnson Chad Johnson is an American television personality, known for his appearances on the ABC reality dating game shows The Bachelorette during the twelfth season, where he tried to win the heart of JoJo Fletcher, and Bachelor in Paradise for the third season. In 2017, he took part in another dating show Famously Single. He entered the house on Day 1. He eventually came fifth place on Day 25.

Derek Acorah Derek Johnson, known better as Derek Acorah, was a British spiritual medium known for appearing on the Sky Living paranormal reality television series Most Haunted from the first series in 2001 until the sixth series in 2006. He entered the house on Day 1. He left in fourth place on Day 25. He died on 4 January 2020 following a short illness.

Helen Lederer Helen Lederer is a British comedian, actress and writer, known for playing Catriona in the BBC sitcom Absolutely Fabulous from 1992 onwards. She is a published author, and has also made appearances in the Channel 4 soap opera Hollyoaks in 2013 and 2015 as Mariam Andrews. She entered the house on Day 1. She became the eighth housemate to be evicted on Day 22.

Jemma Lucy Jemma Henley, known better as Jemma Lucy, is a British reality television personality and glamour model, best known as a cast member in the MTV reality series, Ex on the Beach during the third series in 2015 before later returning for the fifth All-Star series in 2016. In 2011, Jemma was a contestant in Signed by Katie Price along with Big Brother's Bit on the Side host Rylan Clark-Neal. She is also the ex-girlfriend of Celebrity Big Brother 18 winner Stephen Bear. She entered the house on Day 1. During the final on Day 25, she finished in sixth place.

Jordan Davies Jordan Davies is a British reality television personality, best known as a cast member in the ITV2 reality series Ibiza Weekender from the first series onwards, and the MTV reality series, Ex on the Beach during the third series in 2015 before later returning for the fourth and fifth All-Star series in 2016. He is the ex-fiancé of Celebrity Big Brother 17 housemate Megan McKenna. He entered the house on Day 1 and became the fourth housemate to be evicted on Day 15.

Karthik Nagesan Karthik Nagesan is an Indian-born British businessman and television personality, known for competing on the twelfth series of The Apprentice in 2016. He entered the house on Day 1. Karthik became the second housemate to be evicted on Day 11.

Marissa Jade Marissa Jade is an American television personality, known for being a cast member in the VH1 reality series Mob Wives during the show's sixth and final season in 2016. She entered the house on Day 1. On Day 8, she became the first housemate to be evicted after receiving the fewest votes to save.

Paul Danan Paul Danan was a British actor known for playing Sol Patrick in the Channel 4 soap opera Hollyoaks from 1997 until 2001. In 2005 he took part in the first series of Celebrity Love Island before later returning for the second series in 2006. He entered the house on Day 1 and became the sixth housemate to be evicted on Day 18. Danan died on 16 January 2025.

Sam Thompson Sam Thompson is a British reality television personality, known for starring as a cast member on the E4 reality series, Made in Chelsea alongside his sister, Louise. He joined the show for the sixth series in 2013 and has remained as a cast member since. He entered the house on Day 1 and left in third place on Day 25.

Sandi Bogle Sandy Channer, known better as Sandi Bogle, is a British television personality, known for starring in the observational documentary series, Gogglebox on Channel 4. Sandi appeared in the show from the first series in 2013 with her best friend Sandra, but left the show following its eighth series three years later. In 2016, she released her debut single "Casanova". She is the cousin of Naomi Campbell. She entered the house on Day 1. She became the seventh housemate to be evicted on Day 22.

Sarah Harding Sarah Harding was a British singer and actress, known for being a member of the girl group Girls Aloud, which she won a place in following her appearance on the ITV television talent show Popstars: The Rivals in 2002. During her time in the group, they picked up one BRIT award and had four number one singles. However the group split in 2013, and Sarah launched a solo career. As an actress she played Joni Preston in the ITV soap opera Coronation Street in 2015. In 2016 she took part in the third series of The Jump. She entered the house on Day 1. On Day 25, it was announced that Sarah had won the series. She died on 5 September 2021 from breast cancer.

Shaun Williamson Shaun Williamson is a British actor and singer, known for playing Barry Evans in the BBC soap opera EastEnders between 1994 and 2004. He entered the house on Day 1. He was evicted on Day 23, via the backdoor having received the fewest votes to win.

Trisha Paytas Trisha Paytas is an American internet personality, model, actor and singer, known for her YouTube channel "blndsundoll4mj", which currently has over five million subscribers and a billion views. Her internet fame has led her to have appearances on television shows, including Modern Family and Dr. Phil. She also appeared in Eminem's "We Made You" music video and the video for Amy Winehouse's "Tears Dry on Their Own" as well as having a music career of her own. She entered the house on Day 1. On Day 11, Trisha walked from the house.

Summary Day 1 Entrances Shaun, Sarah, Sam, Derek, Marissa, Sandi, Chad, Helen, Karthik, Brandi, Jordan, Trisha, Jemma, Amelia and Paul entered the house. Twists Immediately after entering the house, Shaun was given a secret mission to act increasingly nervous each time a new housemate entered the house and complete several challenges. He failed, meaning he received a killer nomination to give to somebody. Nominations As a result of Shaun's task, he was required to give a killer nomination. He chose Marissa and she faced the public vote. Day 2 Tasks Housemates took part in a talent show with Chad, Helen and Sandi as judges. Jordan and Sam ultimately won. Day 3 Tasks Housemates were split into two teams and had to guess which housemate from the opposing team each fact was about. If they got it right, the housemate would be gunged. Day 4 Punishments As a punishment for Brandi, Jordan and Sam discussing nominations, all luxury food was removed from the house and housemates had to live on basic rations. Tasks Derek, Helen and Paul won today's task and therefore membership to "Big Brothers Private Members' Club", where they lived a life of luxury and were immune from the first public vote. Day 5 Tasks For today's task, housemates who weren't members of the "Private Members' Club" had to wait under a star for it to fall and reveal a gift. Unbeknownst to them, the gifts were allocated to them by the current members. However, if they failed to catch their star they didn't win the reward. During this task, Brandi, Sam and Shaun won membership. Big Brother offered non-members a temptation in return for no further chances to win immunity and therefore automatically face the first public vote. Trisha was the only housemate to accept this. Day 6 Tasks The members of the "Private Members' Club" chose the final three to face the public vote. They chose Chad, Karthik and Sarah, who joined Marissa and Trisha in facing the first public vote. Amelia, Jemma, Jordan and Sandi therefore joined the "Private Members' Club" and were safe from eviction. Day 8 Tasks Led by Derek, the Housemates took part in a ghostly tour in both the Blossom Suite and the Forest Suite. Exits Marissa was evicted from the house, receiving the fewest votes to save. Day 9 Nominations The housemates nominated for the first time. Chad, Karthik, Sarah and Trisha received the most nominations and faced the public vote. Punishments Sam was given a formal and final warning for breaching the rules after unwanted, intimate conduct with Jemma. Day 10 Tasks Sandi was given a secret mission to prove that she's the best housemate at twerking, acting and flirting. Day 11 Exits Karthik was evicted from the house, receiving the fewest votes to save.