| JWR Solutions Ltd | Mining & quarrying | 2024 |
| K & C Engineering Limited | Manufacturing | 2005 |
| K & D Supplies Limited | Wholesale & retail | 2005 |
| K & K Foods Ltd | Hospitality | 2024 |
| K & N Solutions Limited | Construction | 2014 |
| K & V Services Limited | Professional & scientific | 2021 |
| K Dodd Homes Ltd | Real estate | 2026 |
| K Entertainment Limited | Hospitality | 2022 |
| K Jenkins Holdings Limited | Extraterritorial | 2018 |
| K Johnson (EA) Limited | Construction | 2018 |
| K P Seating Ltd | Manufacturing | 2020 |
| K Stone Offshore Services Limited | Professional & scientific | 2019 |
| K&G Construction Norfolk Ltd | Administrative & support | 2019 |
| K.K. Spraying Services Limited | Hospitality | 2005 |
| KAI WAH Investments Ltd | Financial services | 2024 |
| Kamech Services Ltd | Manufacturing | 2003 |
| Kannan Ltd | Transport & logistics | 2026 |
| Karamsad Limited | Real estate | 2006 |
| Kathton Engineering Ltd | Wholesale & retail | 2004 |
| Kavina Systems Limited | Information & communication | 2003 |
| Kayaahmed Ltd | Hospitality | 2024 |
| Kayatorbas Ltd | Hospitality | 2018 |
| KB Diesels & Engineering Ltd | Professional & scientific | 2020 |
| KB Sporting Goods Ltd | Wholesale & retail | 2026 |
| KBS Pipework Limited | Construction | 2013 |
| KCX Property Ltd | Real estate | 2025 |
| KDJ Jewellery Ltd | Wholesale & retail | 2023 |
| KDK Trips Ltd | Transport & logistics | 2019 |
| KDL Property Development Ltd | Construction | 2023 |
| Kearney Engineering Ltd | Professional & scientific | 2018 |
| Keeley ANN Baker Ltd | Extraterritorial | 2020 |
| Keenan Property Investments Limited | Real estate | 2006 |
| Kefolonian Gold Limited | Wholesale & retail | 2026 |
| Kei-Cris Engineering Limited | Administrative & support | 1999 |
| Keith Beare Limited | Construction | 2026 |
| Keith John Harrison Ltd | Professional & scientific | 2025 |
| Keith Jones Living Spaces Ltd | Hospitality | 2024 |
| Kemish Limited | Hospitality | 2026 |
| Kendal Clarke Property Ltd | Real estate | 2025 |
| Kendisecure Group Ltd | Administrative & support | 2024 |
| Kenward Holdings Ltd | Wholesale & retail | 2024 |
| Kerrison Electrical Limited | Construction | 2025 |
| Kerrys Rentals Limited | Administrative & support | 2020 |
| Kevin Hunt Services Ltd | Wholesale & retail | 2025 |
| Keyzors Limited | Administrative & support | 2013 |
| KF HR Consultancy Limited | Administrative & support | 2018 |
| Kfam Distribution Limited | Wholesale & retail | 2024 |
| KFI (GT. Yarmouth) Limited | Real estate | 2019 |
| Khaled Yahya Ltd | Real estate | 2023 |
| Khan Enterprises Limited | Health & social care | 2008 |
| Khangura Limited | Extraterritorial | 2012 |
| Kiaana Motorsport Ltd | Arts & recreation | 2021 |
| Kicker Productions Ltd | Information & communication | 2020 |
| Kickstart GY Ltd | Health & social care | 2026 |
| Kidz Klobber Ltd | Wholesale & retail | 2024 |
| Kierdan Consultants Ltd | Information & communication | 2010 |
| Kierran's Flooring Company Ltd | Wholesale & retail | 2020 |
| Kind Angel Limited | Hospitality | 2020 |
| Kingfisher Aviation Ltd | Transport & logistics | 2025 |
| Kings Court Residents Association Great Yarmouth Limited | Hospitality | 1983 |
| Kingsway Builders Limited | Construction | 2003 |
| Kinsley Security Services Ltd | Administrative & support | 2023 |
| Kipstar Limited | Administrative & support | 2013 |
| Kirby Storage Company Limited | Real estate | 2025 |
| Kirklands and Equipment Supply Company Limited | Wholesale & retail | 2020 |
| Kitcape Limited | Professional & scientific | 2001 |
| Kiyan Logistics Limited | Transport & logistics | 2013 |
| KJ Marine Services Ltd | Professional & scientific | 2023 |
| KJ Property Sourcing Ltd | Real estate | 2024 |
| KJD Services Limited | Construction | 2016 |
| KJS Properties Limited | Wholesale & retail | 2000 |
| Klarizab Ltd | Real estate | 2024 |
| KLZ Properties Limited | Real estate | 2017 |
| KMK Desperados Ltd | Wholesale & retail | 2010 |
| KML Domestic Maintenance Ltd | Construction | 2005 |
| Kngs Barbers 1 Ltd | Other services | 2025 |
| Knight & Knight Group Ltd | Construction | 2018 |
| Knight Home Solutions Ltd | Professional & scientific | 2023 |
| Knightsmith Property Limited | Real estate | 2020 |
| Knowu Wellbeing Ltd | Health & social care | 2025 |
| Kodi Kreations Ltd | Manufacturing | 2026 |
| Koolunga RTM Company Limited | Real estate | 2013 |
| KOZ Catering Ltd | Hospitality | 2024 |
| KP Offshore Ltd | Mining & quarrying | 2019 |
| KP Prestige Clean Ltd | Administrative & support | 2023 |
| Kpdp Properties Limited | Real estate | 2020 |
| KPJ Holdings Limited | Financial services | 2026 |
| Krdp Property Ltd | Real estate | 2022 |
| Krie Media Limited | Information & communication | 2018 |
| Krishamee Limited | Real estate | 2017 |
| KS Cosmetics Limited | Wholesale & retail | 2021 |
| KSA Yarmouth Limited | Real estate | 2025 |
| Kservices Group Ltd | Real estate | 2018 |
| KTM Offshore Ltd | Professional & scientific | 2017 |
| Kumo Kumo Limited | Households | 2018 |
| Kunac Ltd | Financial services | 2020 |
| Kuvont Limited | Wholesale & retail | 2026 |
| KW Gorleston Ltd | Hospitality | 2026 |
| KWR Trade Services Limited | Professional & scientific | 2022 |
| Kyloskyjewellery Ltd | Manufacturing | 2025 |