| Newmac Developments Limited | Administrative & support | 2012 |
| Nexgen Software Services Limited | Information & communication | 2025 |
| Next GEN HR Ltd | Professional & scientific | 2024 |
| Next GEN Prestige Ltd | Wholesale & retail | 2025 |
| Nextgengas Ltd | Construction | 2025 |
| Nihaal Limited | Wholesale & retail | 2024 |
| Nikki Owen Consulting Ltd | Professional & scientific | 2018 |
| Nininain Ltd | Health & social care | 2025 |
| NJ Hand and Wrist Surgery Limited | Health & social care | 2021 |
| NK53 Limited | Health & social care | 2022 |
| Noonan Web Group Limited | Information & communication | 2016 |
| North Oak Homes Limited | Financial services | 2023 |
| North Street Commercial Limited | Wholesale & retail | 2023 |
| Northa Trading Ltd | Wholesale & retail | 2026 |
| Norwell Engineering Limited | Extraterritorial | 1976 |
| Nova Advanced Tissue Engineering Limited | Extraterritorial | 2017 |
| Nova Bio-Pharma Holdings Limited | Professional & scientific | 2008 |
| Nova Bio-Pharma Product Development Ltd | Professional & scientific | 2012 |
| Nova Bio-Pharma Technologies Limited | Manufacturing | 2009 |
| Nova Immunotherapeutics Limited | Professional & scientific | 2014 |
| Nova Laboratories Limited | Manufacturing | 1993 |
| Nova Primary Manufacturing Limited | Professional & scientific | 2017 |
| Novadent Holdings Ltd | Health & social care | 2023 |
| Novi Capital Ltd | Real estate | 2025 |
| NR Multi Services Ltd | Construction | 2022 |
| NRA (Leics) Ltd | Professional & scientific | 2024 |
| NRP Homes Ltd | Real estate | 2022 |
| Nu-Tec Electronics Ltd | Manufacturing | 2003 |
| O a S Properties Ltd | Real estate | 2017 |
| Oadby & Wigston Electrical Ltd | Construction | 2017 |
| Oadby & Wigston PCN Ltd | Health & social care | 2022 |
| Oadby Town FC Limited | Hospitality | 2019 |
| Oddvision Ltd | Information & communication | 2024 |
| Ojrobmark Ltd | Other services | 2020 |
| Oladex Security Ltd | Administrative & support | 2017 |
| Oliver Car Wash Ltd | Other services | 2026 |
| Olympus Fish Bar Limited | Hospitality | 2015 |
| One Fourteen Apparel Ltd | Wholesale & retail | 2018 |
| Onlinetherapyuk Ltd | Extraterritorial | 2021 |
| Oodles Chinese Ltd | Hospitality | 2021 |
| Opatty Limited | Administrative & support | 2016 |
| Optibuild Solutions Ltd | Professional & scientific | 2025 |
| Opulentia Luxe Events Ltd | Hospitality | 2024 |
| Oshcr Limited | Professional & scientific | 2011 |
| OT Independent Limited | Health & social care | 2023 |
| Owrs Automotive Ltd | Wholesale & retail | 2024 |
| OZ Leicester Ltd | Hospitality | 2019 |
| P M E Systems Ltd | Administrative & support | 2017 |
| P Sidhu Solutions Ltd | Extraterritorial | 2024 |
| P&L Home Services Ltd | Construction | 2021 |
| Padarel Ltd | Manufacturing | 2024 |
| Pandarush Ltd | Wholesale & retail | 2026 |
| Pandora's Mirage Ltd | Other services | 2023 |
| Panic Alert Security Systems Limited | Information & communication | 2021 |
| Pankl Racing Systems UK Limited | Manufacturing | 1998 |
| Parkmydomain Limited | Information & communication | 2024 |
| Patidar Brothers Ltd | Wholesale & retail | 2018 |
| Paul Smith Group Limited | Professional & scientific | 2003 |
| Payy YO Consulting Ltd | Professional & scientific | 2012 |
| Peace and Relief International | Health & social care | 2010 |
| Pearl Nitab Limited | Health & social care | 2020 |
| PEN Therapy Limited | Health & social care | 2024 |
| Perfect Pizza Wigston Ltd | Hospitality | 2019 |
| Perfextion Paintworkz Ltd | Wholesale & retail | 2021 |
| Perry's Pawn Brokers Leicestershire Limited | Wholesale & retail | 2026 |
| Petite Belle Boutique Ltd | Other services | 2023 |
| Pets Intelligence Ltd | Information & communication | 2025 |
| Phase 3 Logistics Ltd | Transport & logistics | 2019 |
| Phat Buns UK Ltd | Financial services | 2022 |
| Phillips George Ltd | Real estate | 2016 |
| Phillips Roofing Systems Ltd | Construction | 2019 |
| Phoenix Aluminium Limited | Wholesale & retail | 2007 |
| Pires Property Development Ltd | Construction | 2020 |
| Pixeltech Solutions Limited | Information & communication | 2024 |
| Pizza Oven Leicester Ltd | Hospitality | 2017 |
| Pizza Oven Wigston Limited | Hospitality | 2025 |
| PJI Ltd | Professional & scientific | 2008 |
| PKT Haulage Ltd | Transport & logistics | 2025 |
| PLAN4SITE Limited | Professional & scientific | 2013 |
| PNL Playtime Ltd | Extraterritorial | 2025 |
| Power UP Leicester Ltd | Wholesale & retail | 2023 |
| Prab Transport Ltd | Transport & logistics | 2021 |
| Prabhu Transport Ltd | Transport & logistics | 2019 |
| Pragmatica BSS Ltd | Administrative & support | 2023 |
| Premier Plumbing & Heating (Leicester) Ltd | Construction | 2019 |
| Premier Property Developers Limited | Real estate | 2017 |
| Premium Midlands Limited | Wholesale & retail | 2024 |
| Prestige Autobahn Ltd | Wholesale & retail | 2023 |
| Prestigious Homecare Limited | Health & social care | 2014 |
| Primary Resource Rack Ltd | Education | 2022 |
| Prime Initiatives Ltd | Construction | 2025 |
| Primeline Services Limited | Administrative & support | 2025 |
| Priyanka-Mahendra Food Limited | Hospitality | 2021 |
| PRODUCTS4ALL Ltd | Wholesale & retail | 2026 |
| Project Detailing Ltd | Wholesale & retail | 2022 |
| Prolific Talent Ltd | Arts & recreation | 2025 |
| Prolific Talent Management Limited | Arts & recreation | 2025 |
| Property 4 Site Ltd | Real estate | 2019 |
| PSA (Property Developers) Ltd | Construction | 2007 |
| PSJ Consulting Ltd | Professional & scientific | 2019 |