| Logie Productions Limited | Information & communication | 2019 |
| LOW Cleaves Cottages Ltd | Hospitality | 2019 |
| LS1 Cosmetics Limited | Health & social care | 2008 |
| M G Access Limited | Manufacturing | 2006 |
| M. Fryer Fireplaces Limited | Construction | 2005 |
| Made in Puglia Ltd | Hospitality | 2019 |
| Mainstream Capital Partners LLP | | 2016 |
| Malt Property Ltd | Real estate | 2025 |
| Mango EDI Ltd | Hospitality | 2021 |
| Manor Oaks Management 2 Limited | Financial services | 2022 |
| Manor Oaks Management Limited | Professional & scientific | 2019 |
| Manor Oaks Property Limited | Real estate | 2021 |
| Marabu Limited | Information & communication | 2003 |
| Marsden Bros Limited | Extraterritorial | 1900 |
| MDJ Conveyancing Limited | Professional & scientific | 2022 |
| Meagan Sarah Limited | Professional & scientific | 2022 |
| Melocity Holdings Limited | Professional & scientific | 2024 |
| Michael C Place Ltd | Wholesale & retail | 2022 |
| Middleton Towers 2021 Ltd | Real estate | 2021 |
| Millbrook Property Management Limited | Real estate | 1999 |
| Millett Joinery Ltd | Construction | 2026 |
| Mitchell Laithes Limited | Real estate | 2021 |
| Mitnas Limited | Professional & scientific | 1971 |
| MJP Investments Limited | Financial services | 2013 |
| MMF Debt Purchase Limited | Extraterritorial | 2012 |
| Mole Media Limited | Information & communication | 2016 |
| Mondial Lighting Company Limited | Construction | 1985 |
| Moorside Consulting Engineers Ltd | Construction | 2022 |
| Morris Management Consultancy LLP | | 2012 |
| MR Bragshaw's Fine Art Collection Ltd | Wholesale & retail | 2024 |
| Mr.Velo UK Ltd | Wholesale & retail | 2022 |
| Multimedia Management Limited | Information & communication | 2005 |
| Muse Aesthetics Ltd | Other services | 2023 |
| My First Funnel Limited | Professional & scientific | 2021 |
| My GSN Ltd | Wholesale & retail | 2015 |
| Myster Magic Fireworks Ltd | Wholesale & retail | 2018 |
| N&Co Asset Holdings Limited | Real estate | 2025 |
| N&Co Developments Limited | Real estate | 2025 |
| Nallazo Limited | Financial services | 2024 |
| NC Autos Ltd | Wholesale & retail | 2023 |
| Nebula Music Store Limited | Wholesale & retail | 2024 |
| Newcore Tech Limited | Financial services | 2023 |
| Newcore Tech Search Limited | Administrative & support | 2020 |
| Nicholls Tyreman (Harrogate) LLP | | 2007 |
| Nicholls Tyreman Limited | Real estate | 2006 |
| Nick Tandy Racing LLP | | 2013 |
| NIT Investments Ltd | Financial services | 2021 |
| Northern Leisure Corporation Limited | Arts & recreation | 2021 |
| Norton Mortgage Services Limited | Financial services | 2023 |
| Oddie Holdings Limited | Financial services | 2014 |
| Onespan Limited | Real estate | 1996 |
| Only CUP Coffee Limited | Manufacturing | 2024 |
| OPTIMYZE1 Ltd | Administrative & support | 2019 |
| Organic Values Ltd | Professional & scientific | 2023 |
| Pagani UK Limited | Wholesale & retail | 2014 |
| Paperplanetravel Limited | Administrative & support | 2017 |
| Parikh Partners Limited | Administrative & support | 2017 |
| PB Rizes Ltd | Real estate | 2020 |
| Pelican Holdings Limited | Real estate | 1999 |
| Pelican Marketing Limited | Wholesale & retail | 1996 |
| Peninsula Assets Ltd | Real estate | 2017 |
| Personal Guarantee Protection Limited | Administrative & support | 2014 |
| Peter Limbert Consultancy Limited | Professional & scientific | 2007 |
| Philip LAY Limited | Professional & scientific | 2017 |
| Pinnacle Edge Search Limited | Administrative & support | 2025 |
| Plummer Consultancy Limited | Professional & scientific | 2010 |
| Positive Demand Limited | Professional & scientific | 2013 |
| Powis Property Limited | Households | 2017 |
| PPY Management LLP | | 2018 |
| Precious Holdings (Wakefield) Limited | Construction | 1970 |
| Predictable Project Services Limited | Extraterritorial | 2020 |
| Premier Equinox Limited | Real estate | 2020 |
| Print Professionals Yorks Limited | Financial services | 2018 |
| Progen Search Limited | Administrative & support | 2024 |
| Protection 4 U Limited | Financial services | 2016 |
| PUK Motors Limited | Wholesale & retail | 2021 |
| Queen Anne Court RTM Company Limited | Households | 2020 |
| Radley Green Ltd | Administrative & support | 2011 |
| Ramoyle Homes Limited | Real estate | 2017 |
| Ramoyle Lansdowne Limited | Construction | 2017 |
| Ramoyle Property Limited | Administrative & support | 2003 |
| Realagent Limited | Professional & scientific | 2004 |
| Recify Talent Limited | Administrative & support | 2025 |
| Red Gate Sport Limited | Administrative & support | 2014 |
| Red Gate Sport Promotions LLP | | 2014 |
| Reefrange Limited | | 1981 |
| Richard Westbrook Racing Limited | Arts & recreation | 2010 |
| Richard Westbrook Racing Partners LLP | | 2012 |
| RJM Trading Ltd | Wholesale & retail | 2018 |
| Rnbw Ltd | Information & communication | 2023 |
| ROC Partners (London) Limited | Professional & scientific | 2011 |
| ROC Partners LLP | | 2011 |
| Roger Woodhead Productions Limited | Information & communication | 1996 |
| Rovisons Limited | Professional & scientific | 2009 |
| Rovisons Management LLP | | 2011 |
| S P Dufton Holdings Limited | Financial services | 2024 |
| S&V Investments (Yorkshire) Limited | Real estate | 2013 |
| Safe Asset Recovery Ltd | Professional & scientific | 2024 |
| Seekgtm Limited | Professional & scientific | 2025 |
| Seekhr Ltd | Administrative & support | 2016 |