| KR Testing Ltd | Professional & scientific | 2017 |
| Krafthouse Ltd | Wholesale & retail | 2025 |
| Kranko Trans Ltd | Transport & logistics | 2023 |
| Krayevsky Transport Ltd | Transport & logistics | 2021 |
| KRC Properties Ltd | Financial services | 2019 |
| KRG Capital Limited | Real estate | 2022 |
| KRG Investments Ltd | Real estate | 2013 |
| Kris P Moulding Ltd | Manufacturing | 2021 |
| KRL Industries Ltd | Administrative & support | 2020 |
| KRS Acquisitions Ltd | Real estate | 2020 |
| KRS Cleaning Services Ltd | Administrative & support | 2020 |
| KRS Landscaping & Gardening Services Ltd | Administrative & support | 2020 |
| KRS Maintenance Solutions Ltd | Administrative & support | 2020 |
| Kryten Systems Limited | Arts & recreation | 1995 |
| Krzak Laminating Limited | Manufacturing | 2022 |
| KS Compliance Ltd | Administrative & support | 2019 |
| KS Steel Ltd | Administrative & support | 2014 |
| KSC Broking Limited | Financial services | 1996 |
| KSD Decorating Services Limited | Construction | 1993 |
| KSD Leisure Limited | Extraterritorial | 2000 |
| KSE Recruitment Limited | Administrative & support | 2025 |
| Kspark Electrics (Bournemouth) Ltd | Manufacturing | 2017 |
| KSR Bedding Limited | Wholesale & retail | 2018 |
| KSS Security Southwest Limited | Construction | 2025 |
| Kste Ltd | Hospitality | 2024 |
| KTK Logistics Limited | Transport & logistics | 2025 |
| Ktpr Limited | Professional & scientific | 2014 |
| Kubematics Limited | Professional & scientific | 2019 |
| Kubus Eropean Market Ltd | Wholesale & retail | 2026 |
| Kubusdowntown Ltd | Wholesale & retail | 2025 |
| Kulexar Consulting Ltd | Professional & scientific | 2020 |
| Kuredu Holdings Limited | Extraterritorial | 2024 |
| Kurokai LLP | | 2011 |
| Kusasa Ltd | Construction | 2011 |
| Kush Limited | Health & social care | 2024 |
| KVA Controls Ltd | Manufacturing | 2022 |
| KVA Electrical Services Ltd | Construction | 2022 |
| KVL Construction Ltd | Construction | 2019 |
| KW Performance Academy Ltd | Education | 2022 |
| KW Trading Ltd | Hospitality | 2018 |
| KWW Holdings Ltd | Financial services | 2020 |
| Kwyis Ltd | Professional & scientific | 2023 |
| Kygnos Limited | Information & communication | 2026 |
| Kylc Properties Limited | Real estate | 2025 |
| Kyle House Management Company Limited | Households | 2008 |
| Kyvox AI Ltd | Information & communication | 2025 |
| L & B Driveways Ltd | Construction | 2022 |
| L a Chicken (Bournemouth) Ltd | Hospitality | 2021 |
| L a Garage Ltd | Manufacturing | 2017 |
| L B Womenswear Ltd | Professional & scientific | 2022 |
| L Brooks Engineering Ltd | Manufacturing | 2018 |
| L D Bars Ltd | Hospitality | 2024 |
| L E Sales & Marketing Limited | Financial services | 2005 |
| L G Security Solutions Limited | Administrative & support | 2024 |
| L H & SON Brickwork and Groundworks Ltd | Construction | 2016 |
| L M Business Consultancy Limited | Professional & scientific | 2020 |
| L Miller Services Limited | Professional & scientific | 2025 |
| L R (Southern) Ltd | Construction | 2014 |
| L Squared IT Limited | Information & communication | 2024 |
| L Westfield Financial Solutions Limited | Professional & scientific | 2012 |
| L&A Brickwork Limited | Construction | 2015 |
| L&D 2.0 Ltd | Professional & scientific | 2019 |
| L&D Bournemouth Ltd | Transport & logistics | 2022 |
| L&J Churro Limited | Wholesale & retail | 2018 |
| L&Jc Ltd | Health & social care | 2018 |
| L&P Bake Ltd | Hospitality | 2019 |
| L&R Real Estate Ltd | Real estate | 2024 |
| L&S Food & Beverages Ltd | Hospitality | 2022 |
| L&T Dorset Properties Limited | Real estate | 2022 |
| L'Angelo Limited | Hospitality | 2026 |
| L'Arte (Dorset) Limited | Hospitality | 2020 |
| L'Artiste Ltd | Wholesale & retail | 2023 |
| L-Change Consulting Ltd | Professional & scientific | 2024 |
| L.E.S. Limited | | 1986 |
| L.F.G.P. Limited | | 1983 |
| L.P.S. Promotions Ltd | Professional & scientific | 2017 |
| L.R.S. Consulting Limited | Information & communication | 2025 |
| LA Casa Bella 313 Limited | Hospitality | 2024 |
| LA Casa DI Roxy Ltd | Hospitality | 2026 |
| LA Elite Homes Ltd | Real estate | 2025 |
| LA Familia Card Ltd | Arts & recreation | 2025 |
| LA Fontenella Management Company Limited | Households | 2002 |
| LA Luxe Unique Ltd | Other services | 2025 |
| LA MAR Burger Limited | Hospitality | 2019 |
| LA Media Productions Limited | Professional & scientific | 2018 |
| LA Nuova Barbagia Ltd | Hospitality | 2017 |
| LA Trading - Internal Taxi Advertising Limited | Wholesale & retail | 2016 |
| Laapsi Indian Kitchen Ltd | Hospitality | 2024 |
| Labfutures Ltd | Administrative & support | 2017 |
| Labid Property Ltd | Wholesale & retail | 2025 |
| Labr Ltd | Information & communication | 2025 |
| Laburnum House (Bournemouth) Management Company Limited | Households | 1988 |
| Laburnum House Freehold Company Limited | Households | 2017 |
| Laca Properties Ltd | Real estate | 2022 |
| Lacehurst Court Freehold Limited | Households | 2003 |
| Laceys Solicitors LLP | | 2013 |
| Ladybird Counselling Ltd | Health & social care | 2021 |
| Ladywell (Poole) Management Company Limited | Households | 1999 |
| Laetare Developments Limited | Construction | 2026 |
| Lagareiro Eats Ltd | Hospitality | 2025 |