| Tunbridge Wells Grammar School for Boys, Kent, Team Coulon | 100% |
| Jeremy Coulon and George Coulon |
| |
| King Edward VII School, Sheffield, MI6 | 100% |
| Simon Chu and Marzieh Tehrani, Alex Whittington |
| |
| King Edward VII School, Sheffield, Melkorme | 100% |
| Ewan Davies |
| |
| Blatchington Mill School and Sixth Form College, Brighton and Hove, Team WOT | 100% |
| Neel Patel and Ben Johnson, Jack Cook, And Geoff Williams |
| |
| Stanwell School, The Vale of Glamorgan | 100% |
| Michael Bryant |
| |
| Hills Road Sixth Form College, Cambridgeshire | 100% |
| Robert Lasenby |
| |
| Blatchington Mill School and Sixth Form College, Brighton and Hove, Team Trio | 100% |
| Nikhil and Nikhil, Sam & Callan |
| |
| Fairham Community College, Nottingham, Fairham2 | 100% |
| Kayleigh |
| |
| George Abbot School, Surrey | 100% |
| Jonathan Agg |
| |
| Big Wood School, Nottingham, Brainy Girls | 100% |
| Sarah Wing |
| |
| Royal Hospital School, Suffolk, Independent, 13375/\/4><0|25 | 100% |
| Richard Lawrence and Chris Precious |
| |
| Leicester Grammar School, Leicestershire, Independent, Fimbulvetr | 100% |
| Emma Blackburn and Chris Smith, Cong Chen |
| |
| King Edward VII School, Sheffield, Tiddy | 100% |
| The Inte®net Devil |
| |
| Richard Lander School, Cornwall | 100% |
| Josh Williams |
| |
| The Arnewood School, Hampshire, Alksentrs2 | 100% |
| Alex Scott-johns |
| |
| Fairham Community College, Nottingham, Crazy05 | 100% |
| Kim |
| |
| Robert May's School, Hampshire, Hut 8.5 | 100% |
| Bryn Horsfield |
| |
| Robert May's School, Hampshire, Team Alpha | 100% |
| David Comley and Sam Cobb, Alex Cobb And Sam Nicholson |
| |
| The King's School, Cheshire, Independent, Anti-Cipher | 100% |
| Jun Kawakami and Max Ankers, Charles Barry, George Kiff, Tsubasa Sato |
| |
| The London Oratory School, Hammersmith and Fulham, Wow! I Survived! Thanks To My Bulletproof Vest | 100% |
| Big C and Killa From Manila, Alaeze |
| |
| South Wilts Grammar School for Girls, Wiltshire | 100% |
| Kirsti Biggs |
| |
| Park House School and Sports College, West Berkshire, Eleven-one | 100% |
| Tom Waters |
| |
| Fairham Community College, Nottingham, LauraLoo | 100% |
| Laura |
| |
| The Gryphon School, Dorset | 100% |
| Eden Brent Jones |
| |
| Brighton College, Independent | 100% |
| George Schofield |
| |
| King Edward's School, Bath, Bath & North East Somerset, Independent, Octavian | 100% |
| Moray Macdonald |
| |
| Bishop Wordsworth's Grammar School, Wiltshire, Phat Pidgeon! | 100% |
| Matt Hazell and Sam Niblett, Simon Tunnicliffe, Guy Niblett |
| |
| Yeovil College, Somerset | 100% |
| David Wilkinson |
| |
| The Mount School, North Yorkshire, Independent, Ravia | 100% |
| Sylvia Wan and Rebecca Tse |
| |
| Derby High School, Derbyshire, Independent, Tricipher | 100% |
| Laura Blatherwick and Laura Blatherwick, Becky Hughes, Harriet Williams |
| |
| Manning Comprehensive School, Nottingham, Go Girls 4 | 100% |
| Sidra Nawaz |
| |
| The Gryphon School, Dorset | 100% |
| Tom Long |
| |
| Formby High School, Sefton, Insane | 100% |
| Christian Butcher and Miles Martin, Robert Danvers, James Shorter |
| |
| Oxford High School GDST, Oxfordshire, Independent, AYAKA | 100% |
| Naomi Miller and Laura Bowlby, Chloë Brown, Karina Morrison, Natasha Morrison, Abi Schultz |
| |
| The Camden School for Girls, Camden | 100% |
| Mursal Hedayat |
| |
| The Mount School, North Yorkshire, Independent, SES | 100% |
| Sarine Chau and Edith Lai, Sherry Wang, Sarine Chau |
| |
| The London Oratory School, Hammersmith and Fulham, Team NJ | 100% |
| Nicholas Holliday and Jonathan Dias, Matthew Felstead |
| |
| Yeovil College, Somerset | 100% |
| Benjamin Purchase |
| |
| Latymer Upper School, London, Independent, The Infinitely Prolonged | 100% |
| Matthew Cliffe and Alex Denney, Sarah O\'connor |
| |
| Archbishop Sancroft High School, Norfolk, Phoenix_ASHS | 100% |
| Henry Carruthers and Jenny, The Other Jenny And Lee |
| |
| Cheltenham Bournside School and Sixth Form Centre, Gloucestershire | 100% |
| Jack Nicoll and Amish Bhadeshia |
| |
| Hills Road Sixth Form College, Cambridgeshire, HRSFC-Picnic | 100% |
| Matthew Newcombe and Brendan Donnelly, Tom Fuller, Stuart Craft, Matthew Newcombe |
| |
| The Mount School, York, Y9 Mounties | 100% |
| Becci and Carmen And Soph |
| |
| King Edward's School, Bath, Bath & North East Somerset, Independent, KEScrackers | 100% |
| David Wilcox |
| |
| The Mount School, North Yorkshire, Independent | 100% |
| Sophie Reed |
| |
| King Edward's School, Bath, Bath & North East Somerset, Independent, Morse | 100% |
| Tom Pearce and Jamie Law, Ben Maslen And Moray Mcdonald |
| |
| The Mount School, North Yorkshire, Independent, Double S | 100% |
| Susanna Shiu and Susanna Shiu, Sonia Tam |
| |
| Hills Road Sixth Form College, Cambridgeshire, Bennett_Hammad_Alliance | 100% |
| Luke Bennett and Luke Bennett, Ali Hammad |
| |
| Torquay Boys' Grammar School, Torbay, Postponed Intelligence | 100% |
| Ian Fraser and Matthew Freeman |
| |
| The Mount School, North Yorkshire, Independent | 100% |
| Margaret Brooks |
| |
| The Mount School, North Yorkshire, Independent, Baboon | 100% |
| Rebecca and Lucy,rebecca,rosie |
| |
| South Wilts Grammar School for Girls, Wiltshire, Jocasta Patel | 100% |
| Jocasta Patel |
| |
| City of London School, London, Independent, Miol | 100% |
| Andrew Lawson and Edward-jacek Edgcumbe, Joshua Cockcroft, Max Menuhin |
| |
| Leicester Grammar School, Leicestershire, Independent, White Lightning | 100% |
| Richard Allen and Jacob Chhapi, Hasan Ali, David Souter |
| |
| The Mount School, North Yorkshire, Independent, MISSJ | 100% |
| Michelle Ziling Ou and Jeilyn Sun Yoon, Grace Sze Chui, Michelle Ziling Ou |
| |
| Bishop Vesey's Grammar School, Birmingham | 100% |
| Alasdair Routh |
| |
| The Latymer School, Enfield, Hackers DD | 100% |
| Daniel Monsurate and Dawit Isak |
| |
| The London Oratory School, Hammersmith and Fulham, The Cipher Cloak | 100% |
| Sean O\'carroll |
| |
| Reading School, Reading, One Last Time | 100% |
| Feng Rao |
| |
| Varndean College, Brighton and Hove, Sharp | 100% |
| David |
| |
| Manchester High School for Girls, Greater Manchester, Independent, E To The I Pi Plus 1 = 0 | 100% |
| Ruth Franklin |
| |
| Reading School, Reading, Codeplay | 100% |
| Nick Mcglashan and Chris Cherng, Edward Oram, Dave Sankey |
| |
| Portobello High School, Edinburgh City, The Porty Maths Machines | 100% |
| Cameron Mchendry and Angus Bracks,rebecca Hutchison,emma Inkster,alex Sloan |
| |
| St Francis Xavier Sixth Form College, Wandsworth | 100% |
| Antony Tran |
| |
| Farlington School, Independent, Haigh | 100% |
| Caroline Haigh |
| |
| Endon High School, Staffordshire, PSDIFTUSB | 100% |
| Becci Rushton |
| |
| Longslade Community College, Leicestershire, Irregulars | 100% |
| Jane Aston |
| |
| Torquay Boys' Grammar School, Torbay | 100% |
| Robert Thompson |
| |
| Robert May's School, Hampshire, Genius At Cypher | 100% |
| Charlotte Earles and Charlotte Earles, Ellie Haralampous, Katherine Haralampous |
| |
| St Anne's Convent School, Southampton, The Circumnavigator | 100% |
| Emily Kenyon |
| |
| Halterworth Community Primary School, Hampshire, The Womble Cracking Codes! | 100% |
| Laura Kenyon |
| |
| Dulverton Middle and Community School, Somerset, Exmoor Experts | 100% |
| Josh Farmer and Year 8 |
| |
| Moreton Hall, Independent | 100% |
| Becky Lewis |
| |
| Bishop Wordsworth's Grammar School, Wiltshire, Pi | 100% |
| Daniel Healey and Antony Sanders, Ashley Ramsden, George Holder |
| |
| St Edward's School, Oxfordshire, Independent | 100% |
| Josh Sephton |
| |
| The Grange School, Cheshire, Independent, Clever Code Crackers | 100% |
| Michael Mclean |
| |
| Hills Road Sixth Form College, Cambridgeshire | 100% |
| Dane Elliott |
| |
| North London Collegiate School, Middlesex, Independent, Tottenham4 | 100% |
| D.j.allison and David,vasee,krimal,michael |
| |
| Didcot Girls' School, Oxfordshire, DGS Dangerous Girls Squad | 100% |
| Hannah Thetford and Miriam Johnstone, Eve Norris, Frances Place, Naomi Nickerson, Anne Lonsdale, Hannah Gardiner |
| |
| Harwell Primary School, Oxfordshire, White Knights | 100% |
| Martin Thetford and Ben, Callum |
| |
| The King David High School, Manchester | 100% |
| Benjamin Caller |
| |
| The John Bentley School, Wiltshire, Tuti | 100% |
| Kate Roberts and Charlotte Jackson, Kate Roberts |
| |
| The John Bentley School, Wiltshire, BEDB | 100% |
| Eliza and Dani,ej,bonzo,bex |
| |
| Harry Carlton Comprehensive School, Nottinghamshire, Mathemagicians | 100% |
| Graham Smith and Graham Smith, Brett Hornby, Sasha Brookesbank, Mark Freeman, Huw Foden, Matthew Powell, Neil Hayes, Alex Dawson |
| |
| King Edward VI College Stourbridge, Dudley | 100% |
| Timothy Palmer |
| |
| The Mount School, North Yorkshire, Independent, The Melted Chocolate | 100% |
| Megan Smith and Megan, Keira And Gabby |
| |
| Homeschool, Homeschool | 100% |
| Katriel Cohn-gordon |
| |
| The Judd School, Kent, Fantastic Four | 100% |
| John Sandall and Chris Needham, William Elwood, Tom Stephens |
| |
| Manning Comprehensive School, Nottingham, Go Girls 3 | 100% |
| Islam Gadi and Islam, Toyosi, Sidra, Sahima |
| |
| St John Fisher Catholic High School, North Yorkshire, Shadow | 100% |
| Mark Dessain |
| |
| Devonport High School for Boys, Plymouth, Square Root Of Infinity | 100% |
| Chris Moore and Chay Paterson, Martin Ramsdale |
| |
| Bedford High School, Bedfordshire, Independent | 100% |
| Frances Bennett |
| |
| Truro College, Cornwall | 100% |
| Nick Williams |
| |
| Manning Comprehensive School, Nottingham, GO GIRLS 1 | 100% |
| Oluwatoyosi Eniola Adeniji |
| |
| St Alban's Catholic High School, Suffolk, Sifr | 100% |
| Jason De Carvalho and Ben Kings, Peter Etheridge, Maria Marklove |
| |
| Swavesey Village College, Cambridgeshire | 100% |
| Lara |
| |
| North London Collegiate School, Middlesex, Independent, Colossal Codebreaking | 100% |
| Alina |
| |
| Strode's College, Surrey | 100% |
| Stephen Harris |
| |
| Bridgewater Middle School, Hertfordshire, The Manic Fridges | 100% |
| James Whitley and Xavier Bateman, James Redburn |
| |
| Bishop Wordsworth's Grammar School, Wiltshire, Jimmy_busters | 100% |
| William Salkeld and William Salkeld Tom Hood, Timmy Hiid |
| |
| Urmston Grammar School, Trafford, The Da Vincis (UGS) | 100% |
| Steven Gordon and Steven And His Fellows |
| |
| The Nelson Thomlinson School, Cumbria, Try Try Again | 100% |
| Jason Bell |
| |
| Robert May's School, Hampshire, Nebster | 100% |
| Ben Grabham |
| |
| Therfield School, Surrey, Codefinger And Oddjoe | 100% |
| Michael Page and Joe Newton |
| |
| Tanglin Trust School, Independent, The Wombats | 100% |
| Eleanor Samuels and Tamsin Samuels, Hilary Samuels |
| |
| Swavesey Village College, Cambridgeshire, Perfect Pyramid | 100% |
| Bethany Freer |
| |
| The Henrietta Barnett School, Barnet, HBS Rules | 100% |
| Laura Bergman and Linda Zhou, Tania Mangalage, Laura Bergman |
| |
| North London Collegiate School, Middlesex, Independent | 100% |
| Francesca Golding |
| |
| The Royal Masonic School for Girls, Hertfordshire, Independent, The Cipherettes | 100% |
| Katie Welch And Sian Tanner |
| |
| Hills Road Sixth Form College, Cambridgeshire, Team Toshio | 100% |
| Jonathan Chan and Jonathan Chan, Toshio Kenyon |
| |
| The Perse School for Girls, Cambridgeshire, Independent | 100% |
| Susanna Bridge |
| |
| The Grange School, Cheshire, Independent | 100% |
| Emma Forth |
| |
| The Cedars Upper School and Community College, Bedfordshire | 100% |
| Vicky Simons |
| |
| The Corsham School, Wiltshire, The One Wise Llama | 100% |
| Steven Lamerton |
| |
| Bacup and Rawtenstall Grammar School, Lancashire, Kang Hunters | 100% |
| Josh Cadney and Sarah Bamford, David Bewicke, Andrew Hoyle, Chris Evans |
| |
| St Anne's Convent School, Southampton | 100% |
| Edithparkinson |
| |
| Noadswood School, Hampshire | 100% |
| Robert Edwards |
| |
| Bishop Wordsworth's Grammar School, Wiltshire, Marcus' Team | 100% |
| Marcus |
| |
| Paston College, Norfolk | 100% |
| Martyn Compton |
| |
| The Mount School, North Yorkshire, Independent, Frogs | 100% |
| Laura Malarkey and Laura Malarkey And Philippa Harland |
| |
| Paston College, Norfolk, The Dewberrys | 100% |
| Vicky and Amy, Nicky, Rob |
| |
| Bedford High School, Bedfordshire, Independent, REDHACK | 100% |
| Fbracal |
| |
| Reading School, Reading, Palfrey | 100% |
| Mark |
| |
| Bridgewater Middle School, Hertfordshire, Cipher Tigers | 100% |
| Eleanor Hattersley and Eleanor Hattersley, Stephanie Holmes, Juliette Coles |
| |
| Northampton School for Boys, Northamptonshire, Jig-Sert | 100% |
| Andreas Christodoulou and Stephen Dennis, Kieran Bhardwaj, Casper De Haes |
| |
| Clarendon House Grammar School, Kent, Dark Knights | 100% |
| Charmaine Law and Jenny, Zoe, Roberta, Rosi |
| |
| The King's School, Kent, Independent, Hugh Bird | 100% |
| Hugh Bird |
| |
| Graveney School, Wandsworth, Nemo | 100% |
| Megan Davies Wykes and Ben Williams, Rory Morrison |
| |
| Reading School, Reading, The Joker Of No Trumps | 100% |
| Thomas Cappleman and Thomas Cappleman, Robert Harman |
| |
| The Henrietta Barnett School, Barnet, The3blobs | 100% |
| Cynthia Law and Cynthia Law, Sheva Bergman, Claire Rebello |
| |
| Heart of England School, Solihull, Quest For Pi | 100% |
| Philip Davies and Anthony Price, Charles Donaldson |
| |
| St Francis Xavier Sixth Form College, Wandsworth, Just Anything | 100% |
| Kahil and Rui, Micheal |
| |
| St Francis Xavier Sixth Form College, Wandsworth, Dee | 100% |
| Deego |
| |
| The London Oratory School, Hammersmith and Fulham, DCR | 100% |
| Davidchristopher Ragusa |
| |
| Biddulph High School, Staffordshire, Apocalyptica | 100% |
| Stuart Barlow and Stuart Barlow, Nicola Brennan, Sarah Kirkham, James Holdcroft |
| |
| Oxford High School GDST, Oxfordshire, Independent, Dalmatian | 100% |
| Anastasya Molodykh |
| |
| Oxford High School GDST, Oxfordshire, Independent, Black Swallows | 100% |
| Freya Ferguson and Michelle Parker, Sophie Wilcox |
| |
| Torquay Boys' Grammar School, Torbay, Moomoos | 100% |
| Cameron Bullen and Cameron Bullen, Sam Ahearn, Joe Halstead, Robert Harvey |
| |
| Halesowen College, Dudley, ScruntBucket | 100% |
| Jason White and Jason White |
| |
| West Park Community School, Derby, Freaks | 100% |
| Anthony Crooks |
| |
| William Edwards School, Thurrock, Cipher Soldiers | 100% |
| Geaorge Lilley |
| |
| Luton Sixth Form College, Luton, Team Uber | 100% |
| Adrian Das and Daniel Jackson |
| |
| The King's School, Cheshire, Independent, Bananas | 99.9% |
| Edward Jamieson and Matt Willis |
| |
| Portobello High School, Edinburgh City, The Porty Ciphateers | 99.9% |
| Gordon Young and Georgina Gibson, Evie Forsyth, Kathryn Gordon, Russell Smith, Herbie Loening |
| |
| The Roseland Community School, Cornwall, Roseland Monkeys | 99.9% |
| James Brown and Shannon, Chris |
| |
| Queen Elizabeth School, Cumbria, Trypon | 99.85% |
| Rob Crackles and 2 |
| |
| St Francis Xavier Sixth Form College, Wandsworth, Slimz | 99.85% |
| Daniel |
| |
| Derby High School, Derbyshire, Independent, Diving Bells | 99.4% |
| Laura, Sabby, Chloe, Rosy, Sophie and Laura, Sabby, Chloe, Rosy, Sophie |
| |
| Derby High School, Derbyshire, Independent, 5000 Feet Under | 99.25% |
| Sophie and Sophie,nihar,joss,megans,katherine |
| |
