| KCJ Consulting Limited | Construction | 2001 |
| KDC Group Holdings Ltd | Extraterritorial | 2015 |
| KDC Group Limited | Extraterritorial | 2024 |
| KDC Group Services Limited | Professional & scientific | 2013 |
| KDC Limited | Extraterritorial | 2025 |
| KDC Projects Limited | Professional & scientific | 2011 |
| KDC Resource Group Limited | Financial services | 2015 |
| Keightley Carpets and Flooring Limited | Extraterritorial | 2015 |
| Kelgale Limited | Households | 1997 |
| Kelsobooks Ltd. | Information & communication | 2010 |
| Kemp Consultancy Services Ltd | Financial services | 2022 |
| Kendall Property Ltd | Real estate | 2026 |
| Kennedy Christchurch Limited | Real estate | 2021 |
| Kenny Kersley Training Consultancy Ltd | Professional & scientific | 2026 |
| KENT68 Catering Ltd | Hospitality | 2026 |
| Kenyon Homes Ltd | Construction | 2018 |
| KEO Upvc Ltd | Construction | 2016 |
| Ketchup Communications Limited | Wholesale & retail | 2013 |
| Kevin Lark Limited | Administrative & support | 2007 |
| Keways Properties Ltd | Construction | 1998 |
| Keynes Court Residents Association Limited | Extraterritorial | 2015 |
| KH Carpentry & Building Services Ltd | Construction | 2012 |
| KH Design and Management Ltd | Construction | 2025 |
| Kiko Solutions Ltd | Information & communication | 2026 |
| Kilmington Group Limited | Other services | 2025 |
| Kilnyard Farm Ltd | Agriculture & fishing | 2014 |
| Kimbers (Southern) Limited | Wholesale & retail | 1984 |
| Kimcell Limited | Information & communication | 2023 |
| King Software Training and Consultancy Ltd | Information & communication | 2008 |
| Kings Cuisine Limited | Hospitality | 2016 |
| Kingsway Close Management Company Limited | Real estate | 1997 |
| Kinmar Consulting Limited | Professional & scientific | 2016 |
| Kith & KIN Gifts Ltd | Wholesale & retail | 2021 |
| Kitline Design Ltd | Manufacturing | 2018 |
| Kiwi Accounts Limited | Professional & scientific | 2019 |
| Kiwi Holdings Limited | Professional & scientific | 2016 |
| KJ Kilford Building Services Limited | Construction | 2006 |
| KJ Kilford Carpentry Contractors Limited | Construction | 2002 |
| KL Marine Consultants Ltd | Professional & scientific | 2015 |
| Kleen Marketing Ltd | Administrative & support | 2022 |
| Klrk Properties Ltd | Real estate | 2019 |
| KM Jewellery Ltd | Wholesale & retail | 2019 |
| KNG Composites Limited | Manufacturing | 2017 |
| Knightwood Oaks Residential Care Ltd | Health & social care | 2023 |
| KNL Technologies Limited | Professional & scientific | 2012 |
| Koly Ltd | Real estate | 2012 |
| Koncept Brands Holdings Limited | Financial services | 2021 |
| Koncept Brands Limited | Wholesale & retail | 2020 |
| Kondor Property Company Limited | Real estate | 2013 |
| Kortext Limited | Information & communication | 2013 |
| Kristina Developments Limited | Real estate | 1988 |
| Kruger Property Company Limited | Real estate | 2014 |
| Krypton Products & Services Ltd | Wholesale & retail | 2018 |
| KSP Heating Limited | Construction | 2010 |
| Ku-Er Cafe Group Ltd | Hospitality | 2026 |
| Kudakisi Ltd | Transport & logistics | 2024 |
| KW Solutions (Southern) Ltd | Professional & scientific | 2013 |
| Kwds Services Ltd | Professional & scientific | 2020 |
| Kwmww Limited | Wholesale & retail | 2018 |
| Kylie Aesthetics Christchurch Ltd | Other services | 2022 |
| Kylie Aesthetics Limited | Other services | 2020 |
| Kynstra Ltd | Other services | 2025 |
| L&R Change Consulting Ltd | Professional & scientific | 2024 |
| LA & M Ltd | Wholesale & retail | 2011 |
| LA Building Contractors Ltd | Construction | 2020 |
| LAB Engineering Limited | Manufacturing | 2024 |
| LAB26 Limited | Information & communication | 2014 |
| Labeless Limited | Wholesale & retail | 2021 |
| Labelwell Limited | Manufacturing | 2009 |
| Ladylocks Ltd | Other services | 2026 |
| Lakeside Construction (Southern) Limited | Construction | 2016 |
| Lanav Limited | Manufacturing | 2015 |
| Landlord to Landlord Sales Limited | Real estate | 2010 |
| Lashes & Locks Beauty Limited | Other services | 2024 |
| Latimers (Residents) Management Company Limited | Households | 1969 |
| Latimers(Residents NO.2)MANAGEMENT Company Limited | Real estate | 1971 |
| Latitude North Consultants Ltd | Information & communication | 2009 |
| LAV Solutions Limited | Professional & scientific | 2012 |
| Lawrence Brothers (Billingsgate) Limited | Wholesale & retail | 1930 |
| LB Marine Engineering Ltd | Professional & scientific | 2025 |
| LBS Coaching Ltd | Education | 2023 |
| LC Beynon Ltd | Administrative & support | 2023 |
| LCK Consultants Limited | Professional & scientific | 2009 |
| LCS Projects Ltd | Construction | 2021 |
| LDS Contracting Groundworks & Civil Engineering Limited | Construction | 2026 |
| LE BEL VUE Management Limited | Households | 2007 |
| LEA Forestry Limited | Agriculture & fishing | 1978 |
| LEA Redway Limited | Professional & scientific | 1943 |
| Lean 4 Fitness Limited | Arts & recreation | 2018 |
| Learning Ability Training Ltd | Education | 2018 |
| Ledger & Scribe Limited | Professional & scientific | 2015 |
| Ledgers Vehicle Consultants Limited | Administrative & support | 2025 |
| LEE Digital Consulting Limited | Information & communication | 2026 |
| Legacy Jiujitsu Ltd | Education | 2023 |
| Legend Customs Limited | Wholesale & retail | 2021 |
| Leighton Technology Ltd | Information & communication | 2023 |
| Lenstec (Barbados) Inc. | | 1999 |
| Lenya Theatricals Limited | Arts & recreation | 2025 |
| Lenzo Electrics Ltd | Construction | 2021 |
| Let's Move With Mike Ltd | Transport & logistics | 2019 |