| Season 1 | 49 | Clare Higgins, Doreen Hepburn, Janice Acquah, John McGlynn, Maryann Turner, Matthew Steer, Milo Twomey, Ruth Gemmell, Ruth McCabe, Sam Parks, Adam Ross Ratcliffe, Barney Craig and 37 more |
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| Season 2 | 1 | Barry Jackson |
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| Season 3 | 1 | Stephen Churchett |
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| Season 4 | 1 | Nigel Terry |
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| Season 5 | 1 | Miles Harvey |
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| Season 6 | 1 | Terence Harvey |
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| Season 7 | 4 | Tom Harper, Jane Lowe, Malcolm Terris, Sorcha Cusack |
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| Season 8 | 1 | Nicholas Hewetson |
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| Season 9 | 0 | — |
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| Season 10 | 0 | — |
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| Season 11 | 2 | Jeanie Gold, David Baukham |
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| Season 12 | 1 | Carl Beukes |
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| Season 13 | 1 | Neil Madden |
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| Season 14 | 0 | — |
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| Season 15 | 27 | Amy Wren, Ashwin Bolar, Chloé-may Cuthill, Elyes Gabel, Emma Amos, Faraz Ayub, Georgia Bourke, Glenn Doherty, Juliet Cowan, Lizzie Roper, Madeline Duggan, Naveed Choudhry and 15 more |
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| Season 16 | 85 | Adam James, Adie Allen, Alexander Newland, Amanda Drew, Andrew Dowbiggin, Anna Brewster, Anna Jaskolka, Anna Madeley, Ashley Chin, Bill Ward, Brana Bajic, Branko Tomovic and 73 more |
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| Season 17 | 112 | Christopher Cowlin, Lee Nicholas Harris, Aaron McCusker, Ace Bhatti, Adrian Rawlins, Aislinn De'Ath, Akin Gazi, Alan Bond, Alex Norton, Alisdair McKee, Ashley Walters, Caroline Paterson and 100 more |
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| Season 18 | 114 | Christopher Cowlin, Edmond Moulton, Abhin Galeya, Adam Wilson, Alice Sykes, Amber Rose Revah, Amit Shah, Amy Huberman, Anamaria Marinca, Andrew John Tait, Andrew Tiernan, Beth Goddard and 102 more |
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| Season 19 | 85 | Abigail Hardingham, Aimee Barrett, Alexandra Evans, Alicya Eyo, Ami Metcalf, Amy Jayne, Assad Raja, Ben Tavassoli, Charlotte Emmerson, Clare Holman, Dan Fredenburgh, Daniela Denby-Ashe and 73 more |
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| Season 20 | 40 | Alex Felton, Anna Wilson-Jones, Anneika Rose, Billy Cook, Daisy Edgar-Jones, Darren Morfitt, Dominic Rowan, Douglas Rankine, Elham Ehsas, Fiston Barek, Gerald Kyd, Kevork Malikyan and 28 more |
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| Season 21 | 0 | — |
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| Season 22 | 10 | Adelle Leonce, Art Malik, Dervla Kirwan, Edward Franklin, Gregory Floy, Ingrid Oliver, Kiran Sonia Sawar, Leemore Marrett Jr., Simon Poland, Yennis Cheung |
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| Season 23 | 78 | Daniel Weyman, Adjoa Andoh, Alexa Davies, Anastasia Hille, Ash Tandon, Ben Bailey Smith, Ben Caplan, Buckso Dhillon-Woolley, Clare Higgins, Clive Wood, Cory Chambers, Edward Hogg and 66 more |
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| Season 24 | 76 | Richard Durden, Jack Bandeira, Owen McDonnell, Stephen Wight, Sutara Gayle, Ahmed Elhaj, Amanda Boxer, Ann Mitchell, Anna-Jane Casey, Beth Hinton-Lever, Bronwyn James, Caroline Sheen and 64 more |
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| Season 25 | 45 | Matthew Gravelle, David Leon, Gina Bramhill, Hugh Quarshie, Lloyd Everitt, Shireen Farkhoy, Ian Puleston-Davies, Aidan Cheng, Chris Anderson, Duncan Preston, Emma Beattie, Jacqueline Oceane and 33 more |
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| Season 26 | 88 | Aislín McGuckin, Anna Burnett, Bella Maclean, Charles Abomeli, Craig Miller, Deya Du Preez, Dinita Gohill, Dylan Mynett, Edward Bennett, Emilio Villa-Muhammad, Eoin Lynch, Hannah Rae and 76 more |
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| Season 27 | 75 | Michele Winstanley, Aaron Stephenson, Anders Hayward, Arkar Hayne, Ashley Margolis, Casper Knopf, Cavan Clerkin, Diveen Henry, Ellen Thomas, Emily John, Emily Piggford, George Watkins and 63 more |
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| Season 28 | 94 | Abdul Sulaiman, Amy Booth-Steel, Amy Nuttall, Anay Kamble, Anneika Rose, Anton Valensi, Asif Khan, Ava Hinds-Jones, Beatrice White, Billy Boyle, Billy Harris, Cal MacAninch and 82 more |
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| Season 29 | 85 | Adam Rayner, Alexander Joseph, Angela Yeoh, Ben Batt, Cat Simmons, Chris Gordon, Chris Reilly, Christopher Coghill, David Webber, Dino Fetscher, Eduardo Muniz, Ellena Vincent and 73 more |
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