| Kuasari Limited | Professional & scientific | 2017 |
| L. R. J. Building Services Ltd | Construction | 2021 |
| L.I.F. Limited | Transport & logistics | 1989 |
| LAB ES Limited | Manufacturing | 1994 |
| Lakeside Wellness Limited | Hospitality | 2022 |
| Lambourne Cafe Ltd | Hospitality | 2016 |
| Lanigan International Freight Limited | Professional & scientific | 2007 |
| Leicester Cleaners Limited | Administrative & support | 2019 |
| Let's GET Lost Limited | Arts & recreation | 2017 |
| Letts Electrical Services Limited | Construction | 2009 |
| Little Acorns (Birstall) Limited | Administrative & support | 2002 |
| Lloyd Edmondson Limited | Administrative & support | 2003 |
| Lomas Autos Ltd | Extraterritorial | 2023 |
| Lovett Property Limited | Real estate | 2023 |
| Lowders Building Contractors Limited | Construction | 2016 |
| Lyfespan Ltd | Wholesale & retail | 2020 |
| Maefield CNC Limited | Manufacturing | 2005 |
| Manton Engineering Company Limited | Manufacturing | 1970 |
| Mark Poole Limited | Construction | 2006 |
| Marlborough Investment Company Limited | Financial services | 2025 |
| Marlborough Property (Camden) Limited | Real estate | 2016 |
| Marlborough Property (Chiswick) Limited | Real estate | 2016 |
| Marlborough Property (Colmore ROW) Limited | Real estate | 2013 |
| Marlborough Property (Douglas) Limited | Real estate | 2015 |
| Marlborough Property (NBS 169) Limited | Real estate | 2015 |
| Marlborough Property (NBS 170) Ltd | Real estate | 2026 |
| Marlborough Property (Putney One) Limited | Real estate | 2016 |
| Marlborough Property (Putney Two) Limited | Real estate | 2012 |
| Marlborough Property Co Limited | Real estate | 2012 |
| Massive Ltd | Hospitality | 2014 |
| Mediaway UK Limited | Information & communication | 2006 |
| Midlux Chauffeurs Limited | Transport & logistics | 2016 |
| Milby Coldrooms Limited | Construction | 2000 |
| Moir Wade Design Limited | Manufacturing | 2002 |
| Monroe Textiles Ltd | Wholesale & retail | 2020 |
| Mountseal III Limited | Professional & scientific | 1995 |
| Mountseal UK Limited | Professional & scientific | 2002 |
| N P Services (Leicester) Limited | Manufacturing | 2003 |
| Neon COW Ltd | Information & communication | 2009 |
| Nicsar Limited | Professional & scientific | 1975 |
| Nine Twelve Media Ltd | Professional & scientific | 2019 |
| Oak Leaf Technical Services Ltd | Information & communication | 2024 |
| Offgrid Power Solutions Ltd | Construction | 2022 |
| Oliver Systems Consultancy Limited | Professional & scientific | 2003 |
| One One Media Ltd | Information & communication | 2011 |
| P J Designs (Leicester) Limited | Wholesale & retail | 2005 |
| P. Winterton Limited | Agriculture & fishing | 1959 |
| P.J. Haulage Limited | Transport & logistics | 2004 |
| Panza Mode Agency Limited | Professional & scientific | 2020 |
| PAP Leicester Limited | Construction | 2005 |
| Pasha Barber Syston Ltd | Other services | 2021 |
| Peak White Plant Limited | Administrative & support | 2015 |
| Perry Roberts Limited | Administrative & support | 2016 |
| PM Global Enterprise Ltd | Other services | 2023 |
| Preci-Spark Holdings Limited | Financial services | 2024 |
| Preci-Spark Limited | Manufacturing | 1960 |
| Primark Foods Limited | Extraterritorial | 2007 |
| Pure Visual Communication Limited | Information & communication | 2005 |
| R a Shield Holdings Limited | Manufacturing | 1998 |
| R Birdi Ltd | Professional & scientific | 2025 |
| R S W Enterprises Limited | Professional & scientific | 2010 |
| Readyfield Bloodhounds Ltd | Agriculture & fishing | 2014 |
| Regulus Blue Ltd | Professional & scientific | 2016 |
| Renu Heating Ltd | Construction | 2023 |
| Revilo Industries Ltd | Professional & scientific | 2013 |
| Rhino UK Bootliners Ltd | Wholesale & retail | 2011 |
| Rise Multi Academy Trust | Education | 2012 |
| Robinson OIL Ventures Limited | Information & communication | 2025 |
| Rodwood Interiors Limited | Construction | 2015 |
| S E Services (2003) Limited | Wholesale & retail | 2003 |
| Saiston Sheet Metal Limited | Manufacturing | 2009 |
| Saumur Services Limited | Professional & scientific | 2011 |
| Seven Cities Recycling Limited | Water & waste | 2014 |
| Shield Engineering (Syston) Limited | Manufacturing | 1951 |
| Shield Powertrain Developments Limited | Manufacturing | 1972 |
| Shield Properties Limited | Real estate | 1998 |
| Shield-Lodge Engineering Limited | Manufacturing | 1979 |
| Silverlynn Limited | Professional & scientific | 1995 |
| SKS Knitting Limited | Manufacturing | 2019 |
| Smart Box Packaging Ltd | Manufacturing | 2022 |
| Software Direct Ltd | Wholesale & retail | 2024 |
| Solutek Limited | Manufacturing | 2003 |
| Sophie French Creative Ltd | Professional & scientific | 2016 |
| Ssmw Limited | Administrative & support | 2011 |
| Stor-A-File Group Limited | Professional & scientific | 1996 |
| Sun Bear Services Ltd | Health & social care | 2018 |
| Swyftspace Ltd | Real estate | 2024 |
| Syston Bowling Club | Arts & recreation | 2008 |
| Syston Construction Limited | Construction | 2018 |
| Syston Tooling and Design Company Limited | Manufacturing | 1971 |
| Taylor Freer Technologies Ltd | Professional & scientific | 2014 |
| Technow Integrated Services Ltd | Information & communication | 2013 |
| THE Higher Sports Academy Limited | Arts & recreation | 2018 |
| THE New VIC Theatre of London Limited | Professional & scientific | 1997 |
| THE One Stop Plastics Shop Ltd | Wholesale & retail | 2015 |
| THE Pharmacie Arms Ltd | Hospitality | 2021 |
| THE Syston Day Nursery Limited | Health & social care | 2015 |
| THE Uppingham Motor Company Limited | Wholesale & retail | 2022 |
| Thermo-Floor UK Ltd | Construction | 2011 |
| These Hands Academy Ltd | Health & social care | 2023 |