| Kottes [KOT Training & Education Services] Limited | Mining & quarrying | 2017 |
| Koutouroushis Ltd | Real estate | 2018 |
| Kova Nottingham Ltd | Hospitality | 2026 |
| Kovar Ltd | Information & communication | 2023 |
| Kovara Ltd | Wholesale & retail | 2026 |
| Kovicafe Ltd | Hospitality | 2026 |
| Kowalski Grill Ltd | Hospitality | 2021 |
| KP Indian Restaurant Limited | Hospitality | 2019 |
| KP Nottingham Properties Limited | Real estate | 2020 |
| KP Notts Properties Ltd | Real estate | 2026 |
| KP Paint & DEC Ltd | Construction | 2025 |
| KP Services Ltd | Information & communication | 2023 |
| KPB Tech Solutions Ltd | Information & communication | 2025 |
| KPG Freeholds Ltd | Real estate | 2023 |
| KPK Assets Ltd | Real estate | 2023 |
| KPL Constructions Ltd | Construction | 2026 |
| Kpop Outlet UK Ltd | Wholesale & retail | 2024 |
| KPR Limited | Real estate | 2023 |
| KPS Earthworks Ltd | Construction | 2024 |
| KPS Projects Nottingham Ltd | Construction | 2025 |
| KPV Development Group Limited | Real estate | 2017 |
| KQ Pro Limited | Public administration | 2026 |
| KR Agility Ltd | Professional & scientific | 2019 |
| KR BAL Ltd | Other services | 2023 |
| KR Installations Ltd | Construction | 2012 |
| KR Therapies Limited | Health & social care | 2024 |
| KRA Equity Ltd | Real estate | 2026 |
| Kraden Estates Ltd | Real estate | 2025 |
| Krankenhaus Care Ltd | Health & social care | 2025 |
| Kratos Foreign Exchange Limited | Other services | 2020 |
| Krav Maga Nottingham Limited | Arts & recreation | 2011 |
| Krave Sherwood Ltd | Hospitality | 2025 |
| Krawczak Property Ltd | Construction | 2023 |
| KRB Civils & Rail Limited | Manufacturing | 2025 |
| KRB Estates Ltd | Real estate | 2022 |
| KRB Retail Limited | Wholesale & retail | 2026 |
| Krcs (Digital Solutions) Limited | Wholesale & retail | 1988 |
| Krcs Group Limited | Information & communication | 1983 |
| Kreativ Joinery Limited | Manufacturing | 2013 |
| Kreative Klips Ltd | Professional & scientific | 2026 |
| Kreds Ltd | Manufacturing | 2021 |
| KRH Consultants Ltd | Financial services | 2025 |
| Kribensa Limited | Information & communication | 2014 |
| Krimodo Ltd | Information & communication | 2026 |
| Kris Driver Ltd | Transport & logistics | 2014 |
| Krisbal Ltd | Transport & logistics | 2018 |
| Krish R Limited | Real estate | 2022 |
| Krispy Bitess Ltd | Hospitality | 2025 |
| Kristina Limited | Hospitality | 2024 |
| Kristodia Services Ltd | Professional & scientific | 2024 |
| Kristy and Co Beauty Ltd | Other services | 2022 |
| Krlb Properties Ltd | Real estate | 2021 |
| KRN Building Maintenance Limited | Other services | 2024 |
| Kroj Consultancy Ltd | Professional & scientific | 2025 |
| Krownsphere.Com Limited | Wholesale & retail | 2020 |
| KRP Partners Ltd | Wholesale & retail | 2025 |
| Krupa Trans Ltd | Transport & logistics | 2018 |
| Kryptomed Limited | Health & social care | 2023 |
| Kryso'Ryan Limited | Health & social care | 2025 |
| Krystal Cars Ltd | Wholesale & retail | 2022 |
| Krystal Edge Developments Ltd | Administrative & support | 2020 |
| Krystalise Beauty Ltd | Other services | 2017 |
| Krystian Swiderski Ltd | Transport & logistics | 2025 |
| Krzysztof Krzyzanowski Limited | Other services | 2018 |
| Krzysztof Pluta Ltd | Construction | 2014 |
| Krzysztof Szuberla Ltd | Transport & logistics | 2017 |
| Krzyzowski Art Company Ltd | Wholesale & retail | 2022 |
| KS Dance Academy Ltd | Education | 2024 |
| KS Electrical Installations Ltd | Construction | 2009 |
| KS Golla Limited | Wholesale & retail | 2026 |
| KS Golla Properties Limited | Real estate | 2022 |
| KS MOT Centre Ltd | Wholesale & retail | 2024 |
| KS Performing Arts Limited | Education | 2026 |
| KS Sharma Properties Ltd | Real estate | 2026 |
| KS10 Capital Ltd | Real estate | 2025 |
| KSA Financial Services Ltd | Financial services | 2025 |
| KSB Rentals Ltd | Real estate | 2025 |
| Ksdistros Ltd | Wholesale & retail | 2026 |
| Kseek Limited | Wholesale & retail | 2023 |
| Ksef Concept International Ltd | Construction | 2026 |
| KSH Holdings Limited | Real estate | 2021 |
| KSI Spheres Limited | Other services | 2009 |
| KSJ Limited | Real estate | 2025 |
| KSK (GB) Limited | Wholesale & retail | 2011 |
| KSK Blush Properties Ltd | Real estate | 2026 |
| KSL Estates Limited | Real estate | 2024 |
| KSM Property Services Ltd | Real estate | 2017 |
| KSP Auto Engineering Ltd | Wholesale & retail | 2026 |
| KSR Notts Ltd | Real estate | 2023 |
| Kstone HR Services Ltd | Administrative & support | 2025 |
| KT Motor Group Ltd | Wholesale & retail | 2023 |
| Ktco Education Ltd | Arts & recreation | 2019 |
| Ktco Entertainment Ltd | Arts & recreation | 2019 |
| Ktco Studios Ltd | Arts & recreation | 2017 |
| Kteb Developments Limited | Real estate | 2020 |
| KTR88 Ltd | Real estate | 2019 |
| KTS Farming Limited | Agriculture & fishing | 2021 |
| KTS Group Retail Ltd | Wholesale & retail | 2025 |
| Ktstraining Ltd | Public administration | 2021 |
| Ktwice Ltd | Transport & logistics | 2018 |