| Macgregor Electrical Ltd | Construction | 2013 |
| Magellan Investments Limited | Real estate | 2026 |
| Maginated Ltd | Information & communication | 2019 |
| Main Addingham Limited | Wholesale & retail | 2012 |
| Maple Construction and Joinery Limited | Construction | 2011 |
| Marvin Consultancy Limited | Information & communication | 2007 |
| Medicontracts Limited | Construction | 2006 |
| Middleton Cheney Auto Repairs Limited | Wholesale & retail | 2021 |
| Midgley Construction Limited | Construction | 2013 |
| Mill Court (Roach Bridge) Limited | Real estate | 2019 |
| MJM Mechanical Services Limited | Construction | 1998 |
| Mlqw Ltd | Hospitality | 2017 |
| Moneysworth Ltd | Financial services | 2003 |
| MOVEMENT8 Ltd | Administrative & support | 2016 |
| Ndea Ltd | Real estate | 2015 |
| Newlook Trade Frames Ltd | Construction | 2011 |
| One Branding Ltd | Professional & scientific | 2017 |
| Orange Motor Finance Limited | Financial services | 2008 |
| Orka Outdoors Limited | Other services | 2014 |
| Ortho-Care (U.K.) Limited | Health & social care | 1981 |
| Oxford Cannabinoid Technologies Holdings PLC | Professional & scientific | 2021 |
| P & S Catering Limited | Hospitality | 2021 |
| Parsec Automation Limited | Information & communication | 2011 |
| Paula Dunn Artist Ltd | Arts & recreation | 2022 |
| Peak Nutrition Limited | Wholesale & retail | 2018 |
| Pearson Crossland Direct Limited | Information & communication | 1990 |
| Pennine Textiles & Recycling Ltd | Administrative & support | 2017 |
| Personnel Recruitment Services Limited | Administrative & support | 1998 |
| Peter Ellis Developments Limited | Construction | 1989 |
| Piccalilly Limited | Wholesale & retail | 2009 |
| Predictive Cloud Limited | Information & communication | 2025 |
| Predictive Support Ltd | Information & communication | 2026 |
| Premier Digital Limited | Information & communication | 2015 |
| Premier Preservations (Bradford) Limited | Construction | 2000 |
| Prime Stairlifts Ltd | Construction | 2020 |
| Pro Security & Response Limited | Administrative & support | 2020 |
| Prohq Limited | Other services | 2003 |
| Propyork Ltd | Real estate | 2008 |
| R & B Electrical & Renewables (M&E) Limited | Construction | 2014 |
| Radiology People Limited | Professional & scientific | 2016 |
| Rainbow Cleaning Services (Leeds) Ltd | Administrative & support | 2021 |
| Rainbow Commercial Cleaning (Leeds) Ltd | Administrative & support | 2022 |
| Ralymi Dairy Ltd | Wholesale & retail | 2019 |
| Ravensbrook Associates Ltd | Information & communication | 2009 |
| Red Squared Solutions Ltd | Other services | 2017 |
| Remlive Limited | Wholesale & retail | 2004 |
| Revolver Media Limited | Other services | 2022 |
| RX Pharmatech Ltd | Wholesale & retail | 2016 |
| Sakku Ltd | Hospitality | 2022 |
| Saltaire Art Ltd | Wholesale & retail | 2024 |
| Samm Marketing (France) Ltd | Wholesale & retail | 2006 |
| Samuel David Fabrications Ltd | Manufacturing | 2022 |
| Sangha Metrology Limited | Professional & scientific | 2025 |
| SBS Bars Limited | Hospitality | 2023 |
| Scope Engineering Services Limited | Professional & scientific | 2015 |
| Scorpion Event Production Limited | Professional & scientific | 1999 |
| SEB Francis Investments Ltd | Financial services | 2024 |
| Singleton Apparel Ltd | Wholesale & retail | 2021 |
| SO Banbury Limited | Other services | 2015 |
| Starbeck Tandoori Ltd | Wholesale & retail | 2015 |
| STM Haulage Ltd | Manufacturing | 2022 |
| Structural Plant Services Limited | Construction | 2004 |
| Structural Steel Formations Limited | Professional & scientific | 2011 |
| Ström Talent UK Limited | Administrative & support | 2020 |
| Swanglen Metal Products Limited | Manufacturing | 2011 |
| Swordy Mowat Holdings Ltd | Financial services | 2024 |
| Symal Developments Ltd | Construction | 2020 |
| Symmetry CGI Limited | Administrative & support | 2018 |
| T.J.M Interiors Limited | Wholesale & retail | 2018 |
| Techceram Limited | Manufacturing | 1996 |
| Techceram Technology Centre Limited | Health & social care | 1994 |
| THE Buckingham Butcher Limited | Wholesale & retail | 2016 |
| THE Diner Limited | Hospitality | 2007 |
| THE Herbarium Bar Limited | Administrative & support | 2017 |
| THE Lunch Box (a & D) Ltd | Hospitality | 2002 |
| THE Mount Estate Property Ltd | Other services | 2022 |
| THE Old Library Ltd | Hospitality | 2021 |
| THE Scottish Highland Railway Company Limited | Administrative & support | 2008 |
| THE White House Residential Care Home Ltd | Health & social care | 2022 |
| THE Windmill Failsworth Limited | Hospitality | 2024 |
| THE Woolkeepers Limited | Other services | 2020 |
| This IS Chemistry Ltd | Information & communication | 2016 |
| Titus Holdings Ltd | Financial services | 2021 |
| Titus Learning Ltd. | Information & communication | 2013 |
| Tocci Leisure Limited | Hospitality | 2024 |
| Torpoint Limited | Construction | 1993 |
| Trigabore Limited | Professional & scientific | 2024 |
| TRUE9 Limited | Information & communication | 2014 |
| U32 Consultation Ltd | Information & communication | 2015 |
| Ultimate Facilities Solutions Ltd | Administrative & support | 2007 |
| Unicorn Cards and Games Ltd | Wholesale & retail | 2024 |
| Unity LED Limited | Construction | 2017 |
| Walker James Limited | Administrative & support | 2022 |
| Walltex Coatings (Manufacturing) Limited | Construction | 1986 |
| Wallwood Capital Management Limited | Financial services | 1998 |
| Warren Day Design Ltd | Manufacturing | 2020 |
| Wewow Limited | Construction | 2004 |
| Window & Door Parts Limited | Construction | 2015 |
| Workspace Direct Limited | Construction | 2002 |
| Worsnop Holdings Limited | Financial services | 2024 |