| Knitwear Solutions Limited | Manufacturing | 2006 |
| Knockin EGG Farm Limited | Agriculture & fishing | 1949 |
| Kuhn Farm Machinery(U.K.)Limited | Wholesale & retail | 1970 |
| L P Consultants Limited | Manufacturing | 2007 |
| L.M.F. Ltd. | Agriculture & fishing | 1997 |
| La.Ce Developments Limited | Real estate | 2020 |
| LAF Holdings Limited | Professional & scientific | 2007 |
| Leesouth Limited | Construction | 1983 |
| Lennox Electrical Ltd | Construction | 2004 |
| Lentigo (Carpenters) Limited | Transport & logistics | 1973 |
| LES Evans and SON Limited | Manufacturing | 2003 |
| Letfast Ltd | Financial services | 2024 |
| LIA Laboratory Limited | Professional & scientific | 1994 |
| Liberty Travel North West Limited | Administrative & support | 1994 |
| Lifos Advanced Battery Technology Limited | Manufacturing | 2021 |
| Lighting Industry Federation Limited | Extraterritorial | 1958 |
| Lindstrand UK Ltd | Manufacturing | 2024 |
| Linktime Ltd | Administrative & support | 2020 |
| Linxdesign Internet Limited | Information & communication | 2001 |
| Listers (UK) Limited | Wholesale & retail | 2006 |
| Little Coton Barns Management Company Limited | Households | 2002 |
| Lloyd's Animal Feeds (Futures) Limited | Wholesale & retail | 2007 |
| Lloyd's Animal Feeds (North Eastern) Limited | Manufacturing | 2002 |
| Lloyd's Animal Feeds (Northern) Limited | Wholesale & retail | 1999 |
| Lloyd's Animal Feeds (Southern) Limited | Manufacturing | 1998 |
| Llynclys Farm Limited | Agriculture & fishing | 1967 |
| Longden Coleham Funeral Directors Limited | Professional & scientific | 2007 |
| Longford Pre-School Playgroup | Education | 2007 |
| Longmynd Farms Limited | Agriculture & fishing | 1973 |
| Loxley Partnership Limited | Real estate | 2007 |
| Luca Pacioli Limited | Professional & scientific | 2006 |
| Ludlow & District Community Association Limited | Arts & recreation | 1992 |
| LWF Properties Limited | Real estate | 2024 |
| Lyndex Recycling Systems Limited | Manufacturing | 2005 |
| M a Mantle Limited | Real estate | 2003 |
| M.J. Clewes Construction Limited | | 1985 |
| M.R. Bathrooms & Fires Ltd | Wholesale & retail | 2005 |
| Maddocks Mould Makers Ltd | Manufacturing | 2016 |
| Magdig Media Limited | Information & communication | 2004 |
| Magic Scissors Whitchurch Ltd | Other services | 2021 |
| Makita Manufacturing Europe Limited | Manufacturing | 1989 |
| Maral Truck Consultancy Ltd | Wholesale & retail | 2025 |
| Margaret Morris Movement International Limited | Health & social care | 1980 |
| Mark Sisson Photography Ltd | Professional & scientific | 2005 |
| Market Court (Craven Arms) Management Company Limited | Households | 2001 |
| Market Drayton Mowers Limited | Manufacturing | 1999 |
| Martin Evans (Holdings) Limited | Professional & scientific | 2003 |
| Matt Walker Racing Ltd | Arts & recreation | 2018 |
| Mattel Limited | Administrative & support | 1992 |
| Mayfield Morrison Limited | Construction | 2004 |
| Mcphillips (Holdings) Limited | Professional & scientific | 2004 |
| Meadowvale Foods Ltd | Wholesale & retail | 1989 |
| Meaningful Work LAB Limited | Professional & scientific | 2018 |
| Mediafront Limited | Information & communication | 2001 |
| Melitta UK Holdings Ltd. | Professional & scientific | 2007 |
| Melrace Limited | Professional & scientific | 2002 |
| Menai Foam & Board Limited | Manufacturing | 2003 |
| Metcut (Great Britain) Limited | Professional & scientific | 2004 |
| Metcut Limited | Professional & scientific | 2004 |
| MGL Used Quality Parts Ltd | Wholesale & retail | 2017 |
| Michael Barrett Financial Services Limited | Financial services | 2007 |
| MICRON2 Ltd | Professional & scientific | 2007 |
| Midland Alloy Windows Co. Limited | Real estate | 1972 |
| Mihail MG Ltd | Wholesale & retail | 2022 |
| Mike Speed Builders Limited | Real estate | 2002 |
| Mintonbourne Limited | Professional & scientific | 1990 |
| Mocap Limited | Manufacturing | 1995 |
| Monkmoor Glass & Glazing Ltd | Construction | 2001 |
| Moor Park Charitable Trust Limited | Education | 1981 |
| Morgoed Estates Limited | Real estate | 1996 |
| Morris Bufton & Co. Limited | Administrative & support | 1954 |
| Morris Cook LLP | | 2007 |
| Morris Leisure Limited | Professional & scientific | 2004 |
| Morris Lubricants Limited | Professional & scientific | 2004 |
| Motiv Trailer Manufacturing Ltd | Manufacturing | 1994 |
| Mulberry Cottage Cat Hotel Limited | Agriculture & fishing | 2023 |
| Mulberry Homes UK Limited | Construction | 1999 |
| Muller Dairy (U.K.) Limited | Professional & scientific | 1987 |
| Muller Dairy Property Limited | Professional & scientific | 2023 |
| Muller Investments Limited | Financial services | 2011 |
| Multidean Properties Limited | Real estate | 2002 |
| MVH Limited | Professional & scientific | 2002 |
| Neumo UK Limited | Other services | 1991 |
| New Golden Chef Ltd | Hospitality | 2003 |
| New Trend GB Ltd | Real estate | 2009 |
| Newgill Foundry Limited | | 1982 |
| Newton Oils Limited | Professional & scientific | 2004 |
| Nixon's Farm Limited | Agriculture & fishing | 2006 |
| Nock, Deighton & SON Limited | Real estate | 1954 |
| Norman Thornton & SON (Contractors) Limited | Wholesale & retail | 1982 |
| Northgate Healthcare Limited | Health & social care | 2006 |
| NT Site Services Limited | Professional & scientific | 2003 |
| Nutty Barber Ltd | Other services | 2003 |
| O.G. Griffiths & Sons Limited | Professional & scientific | 1989 |
| Oak Court Property Management Limited | Real estate | 2005 |
| Onya Management Services Limited | Construction | 2002 |
| Open Book Cost Management Limited | Administrative & support | 2008 |
| Opti-Eye Limited | Health & social care | 2005 |
| Optima Procurement Services Limited | Real estate | 2007 |
| Orbicom Limited | Transport & logistics | 1990 |