| Kathryn Rees Ltd | Professional & scientific | 2022 |
| Katie Ravenscroft Catering Limited | Hospitality | 2023 |
| Kbbl Ltd | Wholesale & retail | 2010 |
| Kerne Lodge Education Ltd | Education | 2020 |
| Khaos Nail Bar Ltd | Other services | 2023 |
| KIH Products Ltd | Manufacturing | 2013 |
| Killstreak Limited | Wholesale & retail | 2020 |
| Kiln Dried Logs Ltd | Agriculture & fishing | 2009 |
| Kindred INK Ltd | Other services | 2026 |
| Kinetic Freedom Limited | Public administration | 2017 |
| Kings Accountancy Limited | Professional & scientific | 2016 |
| Kinspire Developments Limited | Construction | 2021 |
| Kinspire Group Limited | Construction | 2017 |
| Kinspire Property (Howle Hill) Ltd | Real estate | 2025 |
| Kinspire Property Limited | Construction | 2023 |
| Kinspire Renovations Limited | Construction | 2023 |
| Kirintec Limited | Manufacturing | 2008 |
| Kitty Litter Investment Trading Ltd | Other services | 2019 |
| KJH Design Solutions Ltd | Professional & scientific | 2023 |
| KLA Consultancy Limited | Professional & scientific | 2026 |
| KM Renovations & Design Ltd | Construction | 2022 |
| Knightshill Farm Management Limited | Administrative & support | 2003 |
| KT Gooch Ltd | Wholesale & retail | 2015 |
| KTS Crafty Gifts Ltd | Wholesale & retail | 2024 |
| Kwigo Limited | Manufacturing | 2009 |
| Kynsphere Limited | Information & communication | 2009 |
| Kyrle Houses Road Peterstow Limited | Households | 2020 |
| Lana Trade Ltd | Wholesale & retail | 2017 |
| Lancaster House Management Company Limited | Households | 1989 |
| Landacre Property Limited | Real estate | 2019 |
| Landwrx Ltd | Manufacturing | 2020 |
| Leadership Trust Training and Development Limited | Professional & scientific | 2015 |
| Leap Solutions Group Ltd. | Wholesale & retail | 2017 |
| Learning for Life Ltd | Education | 2007 |
| Ledbury Allotment Association Limited | Other services | 2009 |
| Ledbury Van Hire Ltd | Transport & logistics | 2018 |
| Legionella Control International Limited | Professional & scientific | 2005 |
| Leighton Trading Limited | Transport & logistics | 1964 |
| Leisure Concepts UK & EU Ltd | Wholesale & retail | 2023 |
| Lemelia Ltd | Professional & scientific | 2016 |
| Lesley Whittington Limited | Administrative & support | 2022 |
| Leyden Delta Limited | Administrative & support | 2013 |
| Leyden Property Limited | Real estate | 2011 |
| LH Heating Ltd | Construction | 2021 |
| LH Strength & Fitness Ltd | Arts & recreation | 2022 |
| Liberty Rock Capital (2019) Limited | Professional & scientific | 2019 |
| Liberty Rock Foods Limited | Manufacturing | 2017 |
| Libran Property Services Limited | Real estate | 2017 |
| Libran Quality Services Limited | Professional & scientific | 2013 |
| Lingwood Automotive Ltd | Professional & scientific | 2019 |
| Linton Polymer Consulting Ltd | Professional & scientific | 2023 |
| Little Business Assistant Ltd | Professional & scientific | 2021 |
| Little Saplings Ltd | Wholesale & retail | 2022 |
| Little Viner Ltd | Real estate | 2025 |
| Littlefields Consultancy Limited | Other services | 2018 |
| Littlefields Supplies Limited | Construction | 2020 |
| Lituva Ltd | Transport & logistics | 2016 |
| Live Wires Solutions Ltd | Construction | 2018 |
| Llangarron Developments Holdings Limited | Financial services | 2025 |
| Llangrove Barns Management Ltd | Households | 2014 |
| Llangrove C E Academy | Education | 2012 |
| LNW Finance Limited | Professional & scientific | 2018 |
| Loadmac Ltd | Real estate | 2005 |
| Lochore Bess Ltd | Energy | 2023 |
| Lodge Farm Kitchen Limited | Manufacturing | 2009 |
| Lollipops Nursery and Creche Limited | Education | 2012 |
| Lowther Renewables Ltd | Energy | 2019 |
| LS Printing Ltd | Manufacturing | 2024 |
| Lucas General Services Ltd | Construction | 2023 |
| Lucy's Patio Limited | Construction | 2026 |
| Luha Property Investments Limited | Real estate | 2016 |
| Lume Property Developments Ltd | Real estate | 2025 |
| Luminocity AV Limited | Administrative & support | 2019 |
| Lustre and Lights Electrical Limited | Construction | 2010 |
| Luxe Event Catering Limited | Hospitality | 2025 |
| Lydney Self Storage Ltd | Extraterritorial | 2017 |
| Lydney Self Store Ltd | Extraterritorial | 2017 |
| Lynx Software Technologies (U.K.) Limited | Information & communication | 1995 |
| M C P Systems Consultants Ltd | Professional & scientific | 2010 |
| M C S Sales Limited | Wholesale & retail | 1983 |
| M Schranz Plastering Ltd | Construction | 2014 |
| Macoto Limited | Information & communication | 2015 |
| MAD Dogs & Vintage Vans Limited | Hospitality | 2016 |
| Made Responsively Ltd | Information & communication | 2014 |
| Made Solutions Limited | Wholesale & retail | 2017 |
| MAF Estates Ltd | Real estate | 2020 |
| Magna Medical Limited | Administrative & support | 2007 |
| Maiden Media Productions Ltd | Administrative & support | 2021 |
| Major Events Boss Limited | Administrative & support | 2012 |
| Makemark Limited | Professional & scientific | 2012 |
| Malvern Hills Healthcare Ltd | Health & social care | 2026 |
| MAN of Ross Limited | Agriculture & fishing | 1993 |
| Maple (248) Limited | Households | 2005 |
| Maple (281) Limited | Households | 2006 |
| Maple (295) Limited | Households | 2006 |
| Maple (358) Limited | Households | 2010 |
| Maple (429) Limited | Households | 2017 |
| Maple (452) Limited | Households | 2019 |
| MAR & MAR Ltd | Transport & logistics | 2018 |
| Marfell Fire Doors Ltd | Construction | 2025 |