| KG Hospitality Ltd | Hospitality | 2024 |
| Khair Partnership Ltd | Health & social care | 2022 |
| KHZ Ltd | Manufacturing | 2008 |
| Kingdom College Limited | Information & communication | 2019 |
| Kingfisher (SB) Ltd | Real estate | 2016 |
| Kirkham Brickwork Limited | Construction | 2021 |
| KL Services Southern Limited | Other services | 2022 |
| Knight Analysis Limited | Information & communication | 1994 |
| Kolojeski Ltd | Professional & scientific | 2018 |
| L.H Legal Ltd | Professional & scientific | 2025 |
| Ladybarn Timber Products Limited | Manufacturing | 2012 |
| Lake View Trading Limited | Hospitality | 2021 |
| Landlordeye Services Limited | Construction | 2012 |
| Largo Enterprises Limited | Hospitality | 2007 |
| Lariggan Limited | Professional & scientific | 2013 |
| Laser Combat OPS Limited | Arts & recreation | 2014 |
| Laura Henning Ltd | Professional & scientific | 2012 |
| Lavafx Limited | Information & communication | 2017 |
| Lazyboy Leisure Limited | Hospitality | 2010 |
| LC Trading Ltd | Wholesale & retail | 2014 |
| Leedpool Limited | Real estate | 2003 |
| Leftovermods Ltd | Manufacturing | 2015 |
| Levantis Limited | Hospitality | 2018 |
| Lewis Allen Construction Limited | Construction | 2011 |
| Licensed to Design Ltd | Arts & recreation | 2002 |
| Link Marco Ltd | Other services | 2011 |
| Little Einstein's Day Care Ltd | Education | 2006 |
| LKW Logistics Ltd | Transport & logistics | 2020 |
| London Event Florist Ltd | Wholesale & retail | 2021 |
| Looma Living Limited | Extraterritorial | 2025 |
| Lovat FOX Ltd | Administrative & support | 2021 |
| Love Unique Personal Limited | Wholesale & retail | 2016 |
| MAC Sign Solutions Limited | Professional & scientific | 2018 |
| Machine Repair and Supply Ltd | Wholesale & retail | 2018 |
| Mahogany Strides Care Services Limited | Health & social care | 2018 |
| Mansion House Interiors (Joinery) Limited | Manufacturing | 2005 |
| Martin Prothero Ltd | Professional & scientific | 2011 |
| MAY Products Ltd | Wholesale & retail | 2006 |
| Mead Building Ltd | Construction | 2019 |
| Mechanical, Plumbing & Electrical Services Limited | Construction | 1994 |
| Media Diplomat Global Ltd | Information & communication | 2012 |
| Michaels Civic Robes & Regalia Limited | Administrative & support | 2013 |
| Microbiosensor Limited | Professional & scientific | 2012 |
| Mike Stopford Limited | Administrative & support | 2005 |
| Millennial Recruitment Ltd | Administrative & support | 2018 |
| Miller Marquees Limited | Administrative & support | 2017 |
| Millgate Auto Centre Limited | Wholesale & retail | 2012 |
| Mina Travel Ltd | Administrative & support | 2006 |
| Mind Matters HR Ltd | Administrative & support | 2023 |
| Mobile Verse Limited | Professional & scientific | 2024 |
| Morganash Limited | Financial services | 2003 |
| Mosaic Bramall Ltd | Hospitality | 2017 |
| Mosaic Event Catering Ltd | Administrative & support | 2017 |
| Mossnook Limited | Hospitality | 1993 |
| Motor IQ Ltd | Wholesale & retail | 2019 |
| Mounteney Legal Services Limited | Professional & scientific | 2015 |
| Move Housing (Doncaster) Limited | Real estate | 2015 |
| MR Cooper's Coffee House Ltd | Hospitality | 2022 |
| My ODD JOB Guys Ltd | Construction | 2020 |
| Myles BIM Services Ltd | Professional & scientific | 2025 |
| Navigate: Educational Psychology Practice Ltd | Education | 2025 |
| Neal the Seal Ltd | Hospitality | 2020 |
| Nemesis Rigging Limited | Information & communication | 2016 |
| Neoterick UK Limited | Hospitality | 2012 |
| New Zealand Leisure Ltd | Hospitality | 2024 |
| Nguyen Economics Ltd | Professional & scientific | 2021 |
| NK Health Limited | Health & social care | 2021 |
| Oakview Advisory Ltd | Professional & scientific | 2025 |
| Oakwood Tree Solutions Ltd | Agriculture & fishing | 2013 |
| Oakwoods International Ltd. | Wholesale & retail | 2017 |
| Ocean Consulting Limited | Professional & scientific | 2017 |
| Okelly Services Limited | Information & communication | 2017 |
| Open Edge Construction Ltd | Construction | 2018 |
| OS Engineering Services Ltd | Professional & scientific | 2023 |
| Osborne Developments (Stockport) Limited | Construction | 2024 |
| OUR Village Nurseries Ltd | Health & social care | 2019 |
| Ovine & Bovine Ltd | Real estate | 2012 |
| Oxford Woodburners Limited | Construction | 2014 |
| Park House Property Investments Ltd | Real estate | 2016 |
| Parker Walsh (Holdings) Limited | Financial services | 2024 |
| Parker Walsh Corporate Recovery Limited | Professional & scientific | 2021 |
| Parrott Ltd | Manufacturing | 2023 |
| Patrick Burling (Holdings) Ltd | Financial services | 2024 |
| PDT Inspection Limited | Professional & scientific | 2019 |
| Peake Projects (London) Limited | Construction | 2015 |
| Performance 360 Ltd | Arts & recreation | 2012 |
| PJP789 Ltd. | Hospitality | 2017 |
| Plce Ltd | Construction | 2020 |
| Polyart Studio Ltd | Information & communication | 2018 |
| Pqli Associates Ltd | Professional & scientific | 2008 |
| PRA World Limited | Professional & scientific | 2016 |
| Precision Fabrications Limited | Manufacturing | 1983 |
| Premier Promotions and Events Limited | Professional & scientific | 2011 |
| Prestige Auto Restoration Ltd | Wholesale & retail | 2021 |
| Preworn Ltd | Wholesale & retail | 2019 |
| PRM Management Limited | Administrative & support | 2012 |
| Property Management & Consultancy Limited | Real estate | 2013 |
| Property Management Services (Manchester) Ltd | Real estate | 2018 |
| Purple Leopard Consulting Ltd | Professional & scientific | 2016 |
| Puzzle Construction and Refurbishment Ltd | Manufacturing | 2017 |