| Gmet Nuclear Limited | Professional & scientific | 2010 |
| Gmet Technical Services Limited | Professional & scientific | 2010 |
| Graham Bradley Landscape and Forestry Limited | Agriculture & fishing | 2012 |
| Groundworks International Ltd | Construction | 2017 |
| Gsarb Limited | Agriculture & fishing | 2019 |
| H & D Retail Ltd | Wholesale & retail | 2021 |
| Harbour Hotel Limited | Wholesale & retail | 2004 |
| Harbour Lights Cumbria Ltd | Hospitality | 2016 |
| Harvey Retreats Ltd | Real estate | 2025 |
| Hastie and Patterson Limited | Manufacturing | 2015 |
| Have Scope Will Travel Limited | Information & communication | 1992 |
| Haverigg Fish and Chip Shop Limited | Wholesale & retail | 2020 |
| Haverigg Nursery & the Clubbers | Administrative & support | 2003 |
| Haverigg Shop Limited | Wholesale & retail | 2020 |
| Hellmut Ruck Limited | Wholesale & retail | 2021 |
| Help for Ukraine CIC | Health & social care | 2022 |
| Hillbeckgreen Ltd | Hospitality | 2021 |
| HML (Kuwait) Ltd | Hospitality | 2013 |
| Hole House Farm Holidays Ltd | Hospitality | 2021 |
| I D Rushforth Limited | Manufacturing | 2015 |
| IAN Hudson and Co Limited | Wholesale & retail | 2009 |
| Ignis Fuels Ltd | Wholesale & retail | 2023 |
| Image Hospitality Limited | Administrative & support | 2005 |
| J Nuttall Building Services Ltd | Construction | 2015 |
| J Shephard & SON Limited | Agriculture & fishing | 2006 |
| J.R. Thornton Ltd | Administrative & support | 2003 |
| James Milburn Ltd | Wholesale & retail | 2023 |
| Jane Publishing Ltd | Information & communication | 2023 |
| Jane Sanders Claims Solutions Ltd | Professional & scientific | 2015 |
| Jane Sanders Contract Solutions Ltd | Professional & scientific | 2017 |
| Jane Sanders Holdings Ltd | Professional & scientific | 2012 |
| JC Keystone Ltd | Real estate | 2025 |
| JD & M Capstick Ltd | Agriculture & fishing | 2014 |
| Jdpsales Ltd | Wholesale & retail | 2025 |
| JOE Geer Ltd | Agriculture & fishing | 2017 |
| JOE Moyes Carpentry and Joinery Ltd | Manufacturing | 2020 |
| John Young Technical Services Ltd | Professional & scientific | 2015 |
| JW Plant Solutions Limited | Construction | 2015 |
| Katche Limited | Health & social care | 2014 |
| Key WRX Limited | Wholesale & retail | 2012 |
| KLM Tyres Ltd | Wholesale & retail | 2019 |
| KMC Grafix Ltd | Professional & scientific | 2013 |
| Knights Club Millom Limited | Wholesale & retail | 2015 |
| Lakeland Blinds Limited | Manufacturing | 2011 |
| Lakeland Footcare Limited | Health & social care | 2015 |
| Lakenwest Ltd | Financial services | 2007 |
| Lakestone Landscaping & Groundworks Limited | Construction | 2026 |
| Lakestone Windows & Doors Limited | Construction | 2026 |
| LAS Catering Ltd | Hospitality | 2020 |
| Laura's Floral Design Limited | Wholesale & retail | 2019 |
| LB Joinery & Kitchens Ltd | Construction | 2017 |
| LD UK Properties Limited | Real estate | 2026 |
| Little Crew & Co Limited | Information & communication | 2023 |
| LMC Safety Solutions Ltd | Professional & scientific | 2018 |
| Loughrigg Consultants Ltd | Professional & scientific | 2024 |
| M & M Pharma Ltd | Health & social care | 2024 |
| M Woodhouse Building and Roofing Limited | Construction | 2017 |
| Majic Pharma Ltd | Other services | 2023 |
| Make New and Mend Ltd | Wholesale & retail | 2020 |
| MEA Electrical Limited | Manufacturing | 2012 |
| Megaesthetics Ltd | Other services | 2018 |
| Melza Property Limited | Construction | 2025 |
| Merrington Leisure Limited | Administrative & support | 1999 |
| Messina International Limited | Professional & scientific | 1993 |
| Mike Huddleston Motor Engineers Ltd | Wholesale & retail | 2005 |
| Millom and Haverigg Together CIC | Health & social care | 2024 |
| Millom Folk Museum Trading Limited | Arts & recreation | 2009 |
| Millom Main Office Limited | Wholesale & retail | 2014 |
| Millom Network Centre Limited | Administrative & support | 2005 |
| Millom Stepping Stones | Education | 2006 |
| Millom Tyre Centre Ltd | Wholesale & retail | 2025 |
| Minton Beam Properties Ltd | Real estate | 2024 |
| Monk Moors Consulting Limited | Professional & scientific | 2013 |
| Moore Arts:Millom | Arts & recreation | 2007 |
| Moorsolve Buy to LET Limited | Real estate | 2019 |
| Moorsolve Limited | Construction | 1997 |
| Mountain Method Limited | Manufacturing | 1986 |
| MSH Rentals Limited | Real estate | 2025 |
| MT Planters Ltd | Manufacturing | 2022 |
| N J Hodgson Ltd | Real estate | 2018 |
| N Millard (APS) Ltd | Manufacturing | 2017 |
| NAE Lettings Ltd | Real estate | 2024 |
| Norman Nicholson House CIC | Hospitality | 2020 |
| North Helicopters Ltd | Transport & logistics | 2025 |
| Oakhurst Properties Limited | Real estate | 2019 |
| Omuzyka Ltd | Education | 2024 |
| OTH Property Ltd | Real estate | 2024 |
| P Woodhouse & Co Limited | Manufacturing | 2008 |
| Paul Norman ( Cumbria ) Limited | Professional & scientific | 2019 |
| Pelleymounters Limited | Transport & logistics | 2025 |
| PGM Building Supplies Limited | Wholesale & retail | 2016 |
| PGM Homes Limited | Construction | 2024 |
| PH Tiling Ltd | Construction | 2018 |
| Pinetown Property Limited | Real estate | 2013 |
| Port Haverigg Water Sports Ltd | Education | 2016 |
| Port Millom Ltd | Other services | 2010 |
| Postpartum Doulas UK CIC | Education | 2025 |
| Powerclean Pressure Washing Services Ltd | Administrative & support | 2024 |
| Punch Bowl the Green Limited | Hospitality | 2024 |
| Q Scaffolding Limited | Construction | 2014 |