| Leominster (Phase 1) Management Limited | Real estate | 2006 |
| Leominster Auto Services Limited | Wholesale & retail | 2023 |
| Leominster Barbers Ltd | Other services | 2024 |
| Leominster Beer Emporium Ltd | Hospitality | 2025 |
| Leominster Car Auctions Limited | Wholesale & retail | 1973 |
| Leominster Construction Group Ltd | Financial services | 2024 |
| Leominster Construction Limited | Construction | 1971 |
| Leominster Crane Hire Limited | Construction | 2005 |
| Leominster Cultural Consortium CIC | Arts & recreation | 2026 |
| Leominster Festival Society | Arts & recreation | 2004 |
| Leominster Garage Services Ltd | Wholesale & retail | 2022 |
| Leominster Laundry Ltd | Other services | 2024 |
| Leominster Lifting Equipment Ltd | Administrative & support | 2020 |
| Leominster MOT Centre & Repairs Ltd | Wholesale & retail | 2026 |
| Leominster Osteopaths Ltd | Health & social care | 2017 |
| Leominster Rifle and Pistol Club | Arts & recreation | 2016 |
| Leominster Spice Limited | Hospitality | 2022 |
| Leominster Tyres Ltd | Wholesale & retail | 2002 |
| Leominster Vag-Tech Ltd | Wholesale & retail | 2017 |
| Leominster Wellness Club Community Interest Company | Other services | 2025 |
| LFF (LEO) Ltd | Wholesale & retail | 2021 |
| Lichire Limited | Professional & scientific | 2013 |
| Lighthouse (Leominster) Management Limited | Hospitality | 1998 |
| Lightwood Cheese Limited | Manufacturing | 2015 |
| Lime Tree Trading Ltd | Education | 2014 |
| Linch Family LLP | | 2023 |
| Lingarn Limited | Information & communication | 2010 |
| Liquisonics Limited | Professional & scientific | 2009 |
| Liquitech Limited | Manufacturing | 2003 |
| Liquitech Tanks Limited | Extraterritorial | 2004 |
| Listed Legacy Ltd | Construction | 2024 |
| Little Orchard Flooring Limited | Extraterritorial | 2024 |
| Little Scamps Projects Ltd | Professional & scientific | 2025 |
| Live Music Academy Ltd | Education | 2024 |
| Lloyd Richards Limited | Professional & scientific | 2000 |
| Lloyds Cooper LLP | | 2010 |
| Logicos Financial Planning Ltd | Financial services | 1984 |
| Lomax and Trent Ltd | Manufacturing | 2010 |
| Lorr Holdings Ltd | Financial services | 2018 |
| Louise Burrell ISW Limited | Health & social care | 2021 |
| Lower Ailey Biogas Limited | Professional & scientific | 2015 |
| Lower Green Holidays Limited | Hospitality | 2018 |
| Lower Hill Farms Limited | Agriculture & fishing | 1949 |
| Lower Mead Management Company Limited | Households | 2019 |
| Lucton International Schools Limited | Education | 2015 |
| Lucton Pierrepont School Educational Trust | Education | 1986 |
| Lucton School Limited | Education | 2009 |
| Luctonians Limited | Arts & recreation | 2016 |
| Lugg Valley Leisure Ltd | Wholesale & retail | 2017 |
| Lunar & Sooty Ltd | Wholesale & retail | 2025 |
| Luttons Property Services Limited | Extraterritorial | 2003 |
| M & M Power Limited | Energy | 2013 |
| M Botwood Groundwork Limited | Construction | 2022 |
| M J Edwards Ltd | Wholesale & retail | 2015 |
| M J Pryce Plumbing & Heating Ltd | Construction | 2009 |
| M Lloyd Engineering Limited | Construction | 2011 |
| M Morris Building Construction Ltd | Construction | 2021 |
| M Staples Construction Limited | Construction | 2026 |
| M&J Events Ltd | Hospitality | 2023 |
| M&M Poultry Limited | Agriculture & fishing | 2015 |
| M&S Construction Leominster Ltd | Construction | 2023 |
| M.I.R.Tv Ltd | Information & communication | 2022 |
| MA Rail Limited | Other services | 2005 |
| MAD Ideas Engineered Ltd | Manufacturing | 2015 |
| Madeline Properties Ltd | Real estate | 2024 |
| Magna Profectum Ltd | Professional & scientific | 2024 |
| MAJ Aviation Ltd | Transport & logistics | 2005 |
| Majava Limited | Administrative & support | 2004 |
| Mamacha Limited | Wholesale & retail | 2008 |
| Mammatt Raptors Limited | Administrative & support | 2026 |
| Mappenors Construction Limited | Construction | 2003 |
| Marches Farm Vets Ltd | Professional & scientific | 2021 |
| Marches Group Limited | Professional & scientific | 2020 |
| Marches Home Care Services Limited | Health & social care | 2005 |
| Marches HR Ltd | Administrative & support | 2022 |
| Mariu Carparts Limited | Wholesale & retail | 2022 |
| Mark Bishop Fire & Security Ltd | Administrative & support | 2007 |
| Markhams Garage Ltd. | Wholesale & retail | 2004 |
| Markhams Garage Property Ltd | Real estate | 2025 |
| Markson Limited | Hospitality | 1995 |
| Marlow Associates Limited | Professional & scientific | 2009 |
| Marplace (Number 683) Limited | Manufacturing | 2006 |
| Martin J Jones Ltd | Professional & scientific | 2015 |
| Mayfair International Private Wealth Management Ltd | Financial services | 2017 |
| Maythorne Property Limited | Extraterritorial | 2018 |
| Mcewan Barry Services Limited | Administrative & support | 2014 |
| Mcewan Wealth Management Limited | Financial services | 2014 |
| Mckenzie Rogers Consulting Ltd | Professional & scientific | 2015 |
| MD Property & Services Ltd | Manufacturing | 2020 |
| Meadowmead Locations Limited | Construction | 2017 |
| Media & Emergency Management Limited | Professional & scientific | 2013 |
| Mentora Digital Limited | Professional & scientific | 2022 |
| Meonville Limited | Real estate | 1997 |
| Mercer Bagley Ltd | Extraterritorial | 2017 |
| Mercer Machinery Limited | Wholesale & retail | 2013 |
| Merlin Timber Frame Limited | Construction | 2021 |
| Metsatcom Limited | Information & communication | 2010 |
| MFS Science Limited | Professional & scientific | 2016 |
| MG Hardwick Limited | Construction | 2011 |
| MGL Electrical Ltd | Construction | 2023 |