| PM Group Holdings Limited | Wholesale & retail | 2026 |
| Podeum Limited | Administrative & support | 2010 |
| Podeum Payroll and Pensions Limited | Administrative & support | 2015 |
| Point Design Limited | Information & communication | 2015 |
| Polymath Ltd | Information & communication | 2020 |
| Pope Abram Heritage Ltd | Real estate | 2026 |
| Portland Bespoke Interiors Ltd | Extraterritorial | 2022 |
| Portman Bridging Finance Ltd | Financial services | 2023 |
| Portman Development Finance Ltd | Financial services | 2023 |
| Portman Finance (London) Ltd | Financial services | 2014 |
| Portman Finance Limited | Financial services | 2005 |
| Portman Property Finance Ltd | Financial services | 2023 |
| Portman Real Estate Finance Ltd | Financial services | 2023 |
| Portman Specialist Finance Ltd | Financial services | 2023 |
| Portman Structured Finance Limited | Financial services | 2012 |
| Portman Structured Loans Ltd | Financial services | 2026 |
| Poupart Holdings Limited | Professional & scientific | 2007 |
| Poupart Imports Limited | Wholesale & retail | 2015 |
| Power Exhibitions and Events Ltd | Construction | 2024 |
| Pragmatic Change Management Limited | Real estate | 2012 |
| Pragmatic Legal Solutions Limited | Professional & scientific | 2025 |
| Pramukh Consultancy Ltd | Professional & scientific | 2012 |
| Praxima Limited | Professional & scientific | 2012 |
| Precious Emeralds Childcare Ltd | Health & social care | 2020 |
| Precision Fintech Ltd | Information & communication | 2020 |
| Prelyn Nominees Limited | Administrative & support | 1979 |
| Premier Investment Solutions Limited | Real estate | 2022 |
| Prepworld Ltd | Extraterritorial | 2020 |
| Pringle & Evans Ltd | Real estate | 2022 |
| Prisign Limited | Manufacturing | 2020 |
| Prism Wealth (Hertford) Ltd | Professional & scientific | 2025 |
| Prism Wealth Management (Colchester) Ltd | Professional & scientific | 2025 |
| Prism Wealth Management Ltd | Professional & scientific | 2018 |
| Pro Courier One Ltd | Transport & logistics | 2026 |
| Property Legacy Limited | Construction | 2021 |
| Property Managment INK Limited | Construction | 2025 |
| Propulsion Online Limited | Professional & scientific | 2024 |
| Prospect Barnet Management Company Limited | Households | 2025 |
| Protea Sets Ltd | Construction | 2022 |
| Prudential Window Cleaning Limited | Administrative & support | 2012 |
| Puffpuffpleaze Ltd | Hospitality | 2025 |
| Pukka UP Records Limited | Extraterritorial | 2012 |
| Pulse Care Limited | Health & social care | 2025 |
| Pure Direct Ltd | Wholesale & retail | 2025 |
| Purple Button Ltd | Information & communication | 2011 |
| Purple Skies Online Limited | Wholesale & retail | 2020 |
| Q-Iman | Education | 2017 |
| Quado Ltd | Real estate | 2018 |
| Qualis Contracts Ltd | Construction | 2020 |
| Quality Franking Supplies Ltd | Wholesale & retail | 2012 |
| Quality Paving & Landscaping Ltd | Construction | 2019 |
| Quoders Ltd | Information & communication | 2014 |
| R & J Metal Finishers Limited | Manufacturing | 2020 |
| R Duffy Carpentry and Joinery Ltd | Manufacturing | 2024 |
| R J Crook Ltd | Transport & logistics | 2003 |
| R&F Party Hire Ltd | Administrative & support | 2025 |
| R&O Engineering Ltd | Professional & scientific | 2019 |
| R&P Construction Services Ltd | Construction | 2026 |
| Raaniatelier Ltd | Wholesale & retail | 2025 |
| Rabc Holdings Limited | Real estate | 2009 |
| Rachael.A Ltd | Information & communication | 2023 |
| Ragkid Limited | Wholesale & retail | 2017 |
| Ramsay Safety Solutions Limited | Professional & scientific | 2011 |
| Raporo Limited | Information & communication | 2026 |
| RAV Management Services Ltd | Financial services | 2026 |
| Rayliz Homes Ltd | Real estate | 2021 |
| Rayliz Limited | Professional & scientific | 2014 |
| Rayu PAN Asia Ltd | Hospitality | 2025 |
| RDN Electrical Limited | Manufacturing | 2023 |
| REC Services (Herts) Ltd | Construction | 2016 |
| Reco Heart Limited | Manufacturing | 2015 |
| Red Barn Consulting Ltd | Professional & scientific | 2023 |
| Red Mcleod Ltd | Real estate | 2020 |
| Redbourne Air Space 1 Limited | Real estate | 2024 |
| Redbourne Air Space Limited | Real estate | 2024 |
| Redbourne Hotel Limited | Real estate | 2024 |
| Redbourne Residential Limited | Real estate | 2024 |
| Redbourne Ventures Limited | Real estate | 2023 |
| Redshift Ltd | Wholesale & retail | 2024 |
| Reflective Celebrancy Ltd | Other services | 2020 |
| Regal Calibre UK Limited | Wholesale & retail | 2010 |
| Regal Networks Limited | Construction | 2025 |
| Regional Care Partnership Ltd | Health & social care | 2025 |
| Rescue One Limited | Information & communication | 2026 |
| Retail Derivative Forum Limited | Other services | 2024 |
| REX LAB Audio Visual UK Ltd | Manufacturing | 2024 |
| REY Martin Limited | Information & communication | 2014 |
| Rezinvest Limited | Other services | 2022 |
| Rhys Evans Film Limited | Information & communication | 2019 |
| Ricote Limited | Professional & scientific | 2010 |
| Risk Angels Ltd | Professional & scientific | 2007 |
| Riverview Enterprises Ltd | Wholesale & retail | 2024 |
| Rizkin Ltd | Wholesale & retail | 2024 |
| RLJ MCR Limited | Real estate | 2017 |
| RM Builders (Cambs) Ltd | Construction | 2023 |
| ROB Johnson Legal Limited | Professional & scientific | 2016 |
| Robert Church Design & Build Limited | Construction | 2019 |
| Robert MAY Holdings Limited | Financial services | 2019 |
| Roccs Residential Community Care Services Limited | Health & social care | 2001 |
| Rockbottom Consulting Ltd | Professional & scientific | 2019 |