| INTEROG8 Limited | Professional & scientific | 2013 |
| Interstack Technology Ltd | Information & communication | 2024 |
| Inventory Clerk Norfolk Ltd | Professional & scientific | 2018 |
| Invite Plumbing and Heating Ltd | Construction | 2018 |
| Iperformance Holdings Limited | Financial services | 2022 |
| Ironworks Fitness Limited | Health & social care | 2023 |
| Isaac Bargh Hoof Trimming Limited | Agriculture & fishing | 2017 |
| Isaac Benson Limited | Agriculture & fishing | 2008 |
| Itamorg Limited | Information & communication | 2010 |
| Itek Computer Solutions Holdings Limited | Financial services | 2026 |
| Itek Computer Solutions Limited | Information & communication | 2009 |
| IVY Garth Management Company Ltd | Other services | 2014 |
| IW Process Solutions Limited | Professional & scientific | 2016 |
| J & M Smith Gardens Ltd | Administrative & support | 2014 |
| J B Jefferies the Dental Surgery Limited | Health & social care | 2010 |
| J B Process Control Ltd | Construction | 2019 |
| J J Coupland & SON Ltd | Wholesale & retail | 2002 |
| J J Fabrications (Kendal) Limited | Construction | 2017 |
| J J Martin (Catering Appliance Superstore) Limited | Wholesale & retail | 2012 |
| J M Solutions(Cumbria) Ltd | Administrative & support | 2025 |
| J Mortimer Fabrications Limited | Manufacturing | 1998 |
| J Rigden Services Limited | Professional & scientific | 2024 |
| J Shorrock & SON Limited | Construction | 2006 |
| J-C 55 Ltd | Wholesale & retail | 2024 |
| J. Elvey & SON Limited | Construction | 2003 |
| J.Lee Surveyors Limited | Other services | 2023 |
| Jake Jones Joinery & Construction Ltd | Construction | 2023 |
| Jake Morgan Electrical and Solar Ltd | Construction | 2023 |
| James Bell Limited | Information & communication | 2003 |
| James Cookson Livestock Limited | Agriculture & fishing | 2014 |
| James Cropper 3D Products Limited | Manufacturing | 2015 |
| James Cropper Overseas Trading Limited | Manufacturing | 2019 |
| James D Burrows Properties Limited | Real estate | 2021 |
| James Property Consulting (Jamespropco) Limited | Real estate | 2021 |
| James Tanner Joinery Limited | Manufacturing | 2009 |
| Jasper Johnson Limited | Information & communication | 2008 |
| Jasper Sanders + Partners Limited | Professional & scientific | 2014 |
| Jayne's Kitchen Ltd | Financial services | 2021 |
| Jbgilmore Ltd. | Financial services | 2020 |
| JCR Cooper Ltd | Real estate | 2020 |
| Jenkin Cragg Farms | Agriculture & fishing | 2013 |
| Jenny Pullen Limited | Education | 2019 |
| JEO Services Ltd | Professional & scientific | 2008 |
| JEZ Walsh Holdings Ltd | Financial services | 2019 |
| Jheel Kendal Ltd | Hospitality | 2025 |
| Jigsaw Family Support Ltd | Education | 2024 |
| JIM Maguire Associates Ltd | Other services | 2020 |
| Jipreston Ltd | Hospitality | 2023 |
| JLE Electrical Contractors Ltd | Construction | 2023 |
| Jlnl Ltd | Wholesale & retail | 2020 |
| Jmcm Investments 1 Limited | Health & social care | 2024 |
| Jmec Homes Limited | Real estate | 2023 |
| JN Data Solutions Ltd | Manufacturing | 2026 |
| Jobs for Chefs Ltd | Administrative & support | 2025 |
| Jobs in the Lakes Ltd | Administrative & support | 2023 |
| JOE Dobson Limited | Construction | 2021 |
| Jogging Pals Ltd | Administrative & support | 2016 |
| John Butcher Consulting Ltd | Professional & scientific | 2017 |
| John Curwen Roofing Limited | Construction | 2018 |
| John Farrer & Company (Kendal) Limited | Wholesale & retail | 1982 |
| John Haworth Properties Ltd | Real estate | 2020 |
| John Mason Consultancy Limited | Professional & scientific | 2010 |
| John Tamblin Financial Services Ltd | Financial services | 2015 |
| John Taylor Plumbing and Heating Limited | Construction | 2011 |
| John Wilson Plumbing & Heating Engineers Limited | Construction | 2010 |
| JPC Anderton Ltd | Real estate | 2019 |
| JPS Hospitality Limited | Hospitality | 2016 |
| JR Agri Limited | Wholesale & retail | 2016 |
| Jrat Ltd | Construction | 2018 |
| Jrotheryeducation Ltd | Education | 2012 |
| Julian Ankers Catering Ltd | Hospitality | 2022 |
| Julian Tucker Properties Limited | Real estate | 2024 |
| Julian Wilson Electrical Limited | Construction | 2007 |
| Juniper Country Park Limited | Real estate | 2021 |
| JW & TE Sharp Limited | Agriculture & fishing | 2017 |
| JW Foster (Heritage) Ltd | Information & communication | 2016 |
| K & J Lees Ltd | Financial services | 2025 |
| K & L Durnall Building Contractors Ltd | Construction | 2017 |
| K & S Commercials Limited | Wholesale & retail | 2014 |
| K Cars Kendal (UK) Limited | Transport & logistics | 2013 |
| K K Electrical Services Kendal Limited | Construction | 2015 |
| K S Bateman Ltd | Extraterritorial | 2012 |
| K T T Services (Kendal) Limited | Agriculture & fishing | 2002 |
| K W Electrical Services Limited | Construction | 2002 |
| K-Town Properties Limited | Real estate | 2015 |
| K.I.T. Group United Kingdom Services Limited | Professional & scientific | 2024 |
| Kachmark Ltd | Hospitality | 2019 |
| Kakaw Ltd | Wholesale & retail | 2021 |
| Karin Brink Limited | Arts & recreation | 2008 |
| Kate King Accountancy Services Limited | Professional & scientific | 2015 |
| Katherines Court Management Limited | Households | 2019 |
| KBA Agricultural Contractors Ltd | Wholesale & retail | 2010 |
| KBS Contracts | | 1992 |
| Keenedge Holdings Limited | Financial services | 2020 |
| Keenedge Limited | Manufacturing | 1983 |
| Kellet Gardens Management Company Limited | Households | 2023 |
| Kencomp Internet Limited | Information & communication | 2001 |
| Kendal Auto Services Ltd | Wholesale & retail | 2023 |
| Kendal Autobody Limited | Wholesale & retail | 1986 |
| Kendal BID Limited | Other services | 2014 |