| Kirkstone Foot Residents' Association Limited | Households | 2001 |
| Kittch Company Ltd | Hospitality | 2017 |
| Lake & Fell Trading Company Ltd. | Hospitality | 1984 |
| Lake District Properties Limited | Households | 2012 |
| Lake District Trendy Lets Limited | Hospitality | 2020 |
| Lake Road Kitchen Limited | Hospitality | 2014 |
| Lake View Country House Ltd | Manufacturing | 2016 |
| Lakeland Architecture Ltd | Professional & scientific | 2025 |
| Lakeland Fashion Limited | Wholesale & retail | 2015 |
| Lakeland Free Range Eggs Limited | Wholesale & retail | 2003 |
| Lakes Cleaning Limited | Administrative & support | 2021 |
| Lakes Cosmetics Limited | Wholesale & retail | 2023 |
| Lakes Cottages and Lodges Limited | Administrative & support | 2022 |
| Lakes Landscapes Limited | Construction | 2003 |
| Landtek Limited | Other services | 2003 |
| Langdale Owners PLC | Hospitality | 1996 |
| Langdale Valley Farmers Ltd | Wholesale & retail | 2024 |
| Langdale/Ambleside Mountain Rescue Team | Health & social care | 2000 |
| Lanty Slee Ambleside Ltd | Hospitality | 2024 |
| Lanty Slee Liquor Co Ltd | Manufacturing | 2018 |
| Lanty Slee Ltd | Financial services | 2025 |
| Lanty Slee Teams Ltd | Administrative & support | 2026 |
| Laura Passey Interiors Ltd | Professional & scientific | 2016 |
| Little Oak Hospitality Limited | Hospitality | 2024 |
| LOG House Property Management Company Limited | Hospitality | 2020 |
| Long Valley Books Limited | Information & communication | 2013 |
| Loughrigg Brow Management Limited | Hospitality | 1999 |
| Love Langdale CIC | Other services | 2023 |
| Lowfield Management Company Limited | Households | 2008 |
| Lyth Valley Lettings Ltd | Hospitality | 2023 |
| Mackay Property Limited | Real estate | 2005 |
| Maple Croft Lodge Limited | Hospitality | 2021 |
| Marketechture Ltd | Information & communication | 2016 |
| Maxonian Limited | Information & communication | 2000 |
| Medveda Pubs Ltd | Hospitality | 2023 |
| Messrs Threlkeld Limited | Agriculture & fishing | 2002 |
| Mike Edmondson Limited | Construction | 2005 |
| Miller Bridge House Limited | Households | 1985 |
| MJ Vacations Ltd | Hospitality | 2017 |
| Moonlight Lodge Limited | Hospitality | 2015 |
| Moorhead Electrical Limited | Manufacturing | 2015 |
| Motors FW Limited | Wholesale & retail | 2022 |
| Mountain HI Limited | Wholesale & retail | 2015 |
| Mountain Walks Ltd | Arts & recreation | 2016 |
| N & J Walmsley Limited | Hospitality | 2015 |
| Natural Lake District Limited | Wholesale & retail | 2013 |
| Neaum Crag Court Limited | Households | 1989 |
| Neaum Crag Limited | Households | 1984 |
| Neil Forbes Limited | Construction | 2014 |
| NO Limits Development Limited | Education | 2008 |
| North Lakes Plumbing and Heating Limited | Construction | 2014 |
| OCG Arts Limited | Wholesale & retail | 2002 |
| Octoberfest Langdale Ltd | Hospitality | 2024 |
| OFF the Record Live Music Ltd | Arts & recreation | 2026 |
| Old Bank House Chocolate Shop Limited | Wholesale & retail | 2013 |
| Openlevel Residents Management Limited | Households | 1987 |
| Orchard Cottages (Near Sawrey) Limited | Real estate | 2013 |
| Origin Renewable Solutions Limited | Construction | 2023 |
| Osprey Croft Lodge Ltd | Hospitality | 2021 |
| Outgate Inn Ltd | Hospitality | 2024 |
| P & J Dixon Ltd | Hospitality | 2005 |
| P.A.D.S.I.S Limited | Arts & recreation | 2017 |
| P.H.Williams Properties Ltd | Real estate | 2019 |
| Pandora Technologies Limited | Manufacturing | 2011 |
| Patria Ltd | Manufacturing | 2016 |
| Paul Mosey Plumbing & Heating Limited | Construction | 2008 |
| Pelican Property Holdings Limited | Financial services | 2023 |
| Pennine View Limited | Hospitality | 2016 |
| Penny Bridge Apparel Ltd | Wholesale & retail | 2013 |
| Personalitywise Limited | Wholesale & retail | 2022 |
| Pitastop Ltd | Hospitality | 2026 |
| Poetic Gift Limited | Wholesale & retail | 2004 |
| Poppi Red Limited | Wholesale & retail | 2006 |
| Precis (325) Limited | Professional & scientific | 1984 |
| Priest Hole Restaurant Ltd | Hospitality | 2026 |
| Projectxchange Ltd | Information & communication | 2026 |
| Pure Lakes Skincare Limited | Manufacturing | 2014 |
| Push Bikes Cartel Limited | Wholesale & retail | 2013 |
| Quality Asset Inspection Limited | Manufacturing | 2018 |
| Quaysiders Club Limited | Other services | 1994 |
| Quaysiders Lakes Resort Ltd | Hospitality | 2025 |
| Quoin Stone Homes Limited | Construction | 2005 |
| R & D Construction Services Limited | Construction | 2022 |
| R & J Ventures Limited | Hospitality | 2019 |
| R. Hewitt Limited | Administrative & support | 1998 |
| R.H.M. (Cumbria) Limited | Hospitality | 2001 |
| Radiance Empire Ltd | Extraterritorial | 2022 |
| Randy Pike Lettings Limited | Real estate | 2026 |
| Ratio Technology Limited | Manufacturing | 2018 |
| RBS Sales Ltd | Wholesale & retail | 2024 |
| Red Screes Consulting Limited | Information & communication | 2016 |
| Redwood Rising Limited | Information & communication | 2023 |
| Retreats With Spirit Ltd | Hospitality | 2023 |
| Richard Bowness Limited | Wholesale & retail | 2011 |
| Rigby Growth Consulting Ltd | Professional & scientific | 2026 |
| Roger Ground Residents Field Limited | Real estate | 2013 |
| Rothay House Limited | Hospitality | 2005 |
| Rothay Manor Limited | Hospitality | 2016 |
| Rowan Software Systems Ltd | Information & communication | 2018 |
| RST Estates Trading Company Limited | Transport & logistics | 2022 |