| JBS Property Holdings Limited | Real estate | 2021 |
| JCR Health Ltd | Health & social care | 2015 |
| Jctmw Limited | Arts & recreation | 2024 |
| Jennifer Fynn Art Ltd | Arts & recreation | 2022 |
| Jeremy Parker Electrical Ltd | Construction | 2014 |
| Jfcontracting Ltd | Agriculture & fishing | 2024 |
| Jimtronic Ltd. | Information & communication | 2015 |
| Jing T Properties Ltd | Real estate | 2016 |
| Jireh-Tek Limited | Professional & scientific | 2006 |
| JMB Accounting Ltd | Professional & scientific | 2009 |
| JMB Motors Limited | Wholesale & retail | 1983 |
| John Stefanidis Brands Limited | Professional & scientific | 2006 |
| JT Fitness Limited | Arts & recreation | 2020 |
| June Lane Residents Management Company Limited | Households | 2006 |
| Justify Wills Limited | Professional & scientific | 2023 |
| JW Accounting Ltd | Professional & scientific | 2017 |
| K & W Horizons Limited | Professional & scientific | 2016 |
| K B Holdings Limited | Real estate | 2001 |
| K9 Daycare & Education Limited | Other services | 2021 |
| Kamre Investments Ltd | Real estate | 2016 |
| Katsura Surveys Limited | Professional & scientific | 2008 |
| Katy Sexton Sport and Fitness Ltd | Arts & recreation | 2017 |
| Keel Close Investments Limited | Real estate | 2025 |
| Keeleys Kitchen Event Catering Ltd | Hospitality | 2024 |
| Keerim Design Limited | Information & communication | 2009 |
| Keidan Construction Ltd | Construction | 2024 |
| Keith Taylor Consulting Limited | Professional & scientific | 2018 |
| Kerrera Limited | Professional & scientific | 2015 |
| Kerrera Property Limited | Extraterritorial | 2017 |
| Key 2 Driving Limited | Education | 2009 |
| Key 2 Transport Limited | Transport & logistics | 2009 |
| Keyhole Ltd | Real estate | 2026 |
| KH Law Limited | Professional & scientific | 2019 |
| Khameleon AD Limited | Professional & scientific | 2025 |
| Kian Investments Limited | Real estate | 2004 |
| Kiki T'S Coffee Limited | Hospitality | 2025 |
| Kingsbury Home Improvements Ltd | Construction | 2011 |
| Kiriton Limited | Information & communication | 2010 |
| KJK Great Estates Ltd | Real estate | 2024 |
| KJM Communications Consulting Ltd | Professional & scientific | 2026 |
| Konchem Ltd | Wholesale & retail | 2013 |
| KOR Business Solutions Limited | Professional & scientific | 2018 |
| Kubucu Ltd | Manufacturing | 2023 |
| Kuopio Property Limited | Real estate | 2016 |
| Kvasir Properties Limited | Real estate | 2016 |
| Kwasan Limited | Financial services | 2024 |
| Kwerk-E Ltd | Other services | 2025 |
| Kybosh Media Ltd | Information & communication | 2025 |
| Lambent UK Limited | Professional & scientific | 2003 |
| Landlubber Property Limited | Real estate | 2022 |
| Lantak Ltd | Real estate | 2019 |
| Lanzerac Ltd | Professional & scientific | 2002 |
| Larsen Paint Finishes Limited | Construction | 2016 |
| Launchpad London Ltd. | Professional & scientific | 2014 |
| Lawnplant Limited | Professional & scientific | 2004 |
| Lawson Architecture Commercial Limited | Professional & scientific | 2011 |
| Lawson Architecture Limited | Construction | 2014 |
| Leancrest Limited | Information & communication | 2025 |
| Lee's Garden (Liphook) Ltd | Hospitality | 2024 |
| Leeps Ltd | Construction | 2011 |
| Lemur Software Limited | Information & communication | 1995 |
| Lewington Lawns Limited | Administrative & support | 2012 |
| Lewis Cahill Limited | Real estate | 2003 |
| Liberty Foster Care Limited | Health & social care | 2009 |
| Lieda’S GM Cleaning Services Ltd | Administrative & support | 2019 |
| Lindsey Clark Brothers Limited | Administrative & support | 2003 |
| Liphook A3 Services Limited | Real estate | 2019 |
| Liphook Car Garage Ltd | Wholesale & retail | 2021 |
| Liphook Convenience Store Ltd | Wholesale & retail | 2025 |
| Liphook Logistics Limited | Transport & logistics | 2016 |
| Liphook Skin & Beauty Ltd | Other services | 2024 |
| Liphook Spice Ltd | Hospitality | 2023 |
| Liphook Tree Surgeons Limited | Agriculture & fishing | 2016 |
| Liss Linen Ltd | Other services | 2016 |
| Liss Model Railway Group Limited | Other services | 2025 |
| Litchfield Search Ltd | Administrative & support | 2012 |
| LIV for Speed Limited | Arts & recreation | 2013 |
| Live Unltd Ltd | Manufacturing | 2023 |
| Lloyd's Advisory Ltd | Professional & scientific | 2026 |
| Locus Interiors Ltd | Professional & scientific | 2020 |
| Lodge Automotive Limited | Wholesale & retail | 2023 |
| Loftrobe Ltd | Manufacturing | 2017 |
| Loftrobe Surveying & Fitting Ltd. | Agriculture & fishing | 2019 |
| Loneside, Petworth Road, Haslemere (Maintenance) Limited | Households | 1963 |
| Looker Logistics Ltd | Transport & logistics | 2026 |
| Lorencap Investments Limited | Professional & scientific | 2010 |
| Lucy Cunningham Interiors Limited | Wholesale & retail | 2016 |
| Luluorry Ltd | Wholesale & retail | 2019 |
| Lumi AGM UK Limited | Information & communication | 1991 |
| Lumi Global Limited | Financial services | 2020 |
| Lumi Holdings Limited | Professional & scientific | 2002 |
| Lumi Technologies Limited | Administrative & support | 1996 |
| Lyn's Iron Maidens Ltd | Other services | 2011 |
| Lynchmere Community Grazing CIC | Agriculture & fishing | 2017 |
| M & S Mechanicals Ltd | Manufacturing | 2022 |
| M W Brace Construction Ltd | Construction | 2019 |
| M&M General Building Ltd | Construction | 2016 |
| M2M Cloud Limited | Wholesale & retail | 2006 |
| Madeyou Ltd | Professional & scientific | 2024 |
| Make ME Something Special Ltd | Wholesale & retail | 2012 |