| Owners Combined Limited | Real estate | 1999 |
| P Hampstead Limited | Hospitality | 2026 |
| P.J. Labour Services Limited | Administrative & support | 1996 |
| Pagion Trading Limited | Real estate | 2021 |
| Palace of Dragons Limited | Hospitality | 2023 |
| Park Street Consultancy Ltd | Professional & scientific | 2024 |
| Patchouli Lilac Limited | Other services | 2018 |
| Paul Court (Windsor Road) Management Company Limited | Real estate | 1967 |
| Paul Court Holdings Limited | Households | 2004 |
| Payments Advisory Services Limited | Administrative & support | 2018 |
| Pedsar (UK) Limited | Construction | 2013 |
| Penelope Law Medical Services Limited | Health & social care | 2012 |
| Peoplebeam Technology Limited | Information & communication | 2021 |
| Pern & PYE Limited | Hospitality | 2018 |
| Perspective Film Production Limited | Information & communication | 2015 |
| Perspective Productions (2005) Limited | Information & communication | 2002 |
| Peter East Associates Limited | Education | 1998 |
| Philippe Conticini UK Limited | Hospitality | 2019 |
| Philworld Enterprise Limited | Real estate | 2018 |
| Phoenix Energy Solutions Ltd | Professional & scientific | 2015 |
| PI Global Talent and Immigration Services Limited | Professional & scientific | 2024 |
| Pigani Limited | Professional & scientific | 2026 |
| Pingaway Limited | Extraterritorial | 2003 |
| Pizaza Edgware Ltd | Real estate | 2017 |
| POR FIN Limited | Financial services | 2013 |
| Portman Digital Marketing Limited | Information & communication | 2019 |
| Postbar Limited | Construction | 2003 |
| Power-U Limited | Health & social care | 2001 |
| Precious Films (UK) Limited | Information & communication | 2018 |
| Premier Commercial Projects Limited | Construction | 2018 |
| Premier Fitting LLP | | 2011 |
| Primate Films Limited | Information & communication | 2020 |
| Promo Concepts Ltd | Other services | 2014 |
| Propfurn Limited | Real estate | 2009 |
| Prutkol Investments Limited | Real estate | 1960 |
| Purple Rose Property Ltd | Real estate | 2021 |
| Quintas Homes Limited | Construction | 2006 |
| Quod Orbis Limited | Administrative & support | 2018 |
| Quontex Ltd | Information & communication | 2018 |
| R & J Global Enterprises Limited | Construction | 2020 |
| R & J Global Investments Ltd | Construction | 2021 |
| R B Recruitment Services Limited | Administrative & support | 1996 |
| Raffis Limited | Real estate | 2008 |
| Raglan House Limited | Real estate | 2019 |
| Ranch GG Limited | Hospitality | 2026 |
| Ransmart Consulting Limited | Other services | 2025 |
| RAW Material Software Limited | Information & communication | 2000 |
| Rawls & Co Limited | Professional & scientific | 2003 |
| Raygreen Development Limited | Real estate | 1966 |
| Reanda UK Limited | Professional & scientific | 2016 |
| Rebecca Einhorn Ltd | Construction | 2023 |
| Red Architecture Ltd | Professional & scientific | 2012 |
| RELM4 Ltd | Real estate | 2022 |
| Remdex Ltd | Administrative & support | 2020 |
| Reveal the Real Ltd | Professional & scientific | 2024 |
| RG2023 Limited | Hospitality | 2023 |
| Rhodes & Lauritsen Ltd | Administrative & support | 2010 |
| Ridgeline Trade Intl Ltd | Real estate | 2014 |
| Riverhouse Partners Holdings Limited | Financial services | 2020 |
| Riverhouse Partners Limited | Administrative & support | 2010 |
| ROB Clark Consulting Limited | Administrative & support | 2009 |
| Rolestra Limited | Real estate | 2017 |
| Roof Slate Ltd | Extraterritorial | 2021 |
| Roofing Tiles Ltd | Extraterritorial | 2021 |
| Rose and Rose Industry Limited | Wholesale & retail | 2010 |
| Ross Hutchinson Limited | Financial services | 2017 |
| RPG (London) Ltd | Real estate | 2022 |
| RSB Estates Ltd | Real estate | 2021 |
| Sabreleague Limited | Real estate | 1987 |
| Sage Personnel Limited | Administrative & support | 2018 |
| SAL99 Consulting Limited | Professional & scientific | 2022 |
| Samantha Jayne Property Group Ltd | Hospitality | 2021 |
| Saxon Investments Limited | Real estate | 1998 |
| Saysam Limited | Hospitality | 2026 |
| Scarborows Limited | Wholesale & retail | 2017 |
| SE Edgware Ltd | Real estate | 2018 |
| Seven Consultancy Limited | Professional & scientific | 2013 |
| Seventy Two Property Management Limited | Real estate | 2016 |
| Shimi Elkabetz Hairstyle Limited | Other services | 2026 |
| Shuk Shack Limited | Wholesale & retail | 2024 |
| Shun Tong Long Ltd | Hospitality | 2019 |
| Siata Limited | Real estate | 2021 |
| Silverleaf HB Properties Limited | Real estate | 2020 |
| Simten Limited | Construction | 2018 |
| Singer Vielle 2 LLP | | 2004 |
| Singer Vielle Limited | Professional & scientific | 2013 |
| Singer Vielle Properties 2 Limited | Real estate | 2009 |
| Sirius Alpha Limited | Professional & scientific | 2013 |
| SK Estates + Finance Limited | Real estate | 2015 |
| Skyedaisy Limited | Financial services | 2011 |
| Smerin Architects LLP | | 2011 |
| Socca Properties Limited | Real estate | 2021 |
| Soulrich Group Limited | Financial services | 2022 |
| Soulrich Limited | Information & communication | 2024 |
| Soulrich Multi-Trends UK Ltd | Administrative & support | 2024 |
| Soulrich Original Ltd | Manufacturing | 2023 |
| Soya K&J Limited | Hospitality | 2021 |
| SPC Global Limited | Other services | 2023 |
| Spenzo Limited | Information & communication | 2023 |
| SPIEGELGLASSE14 Limited | Administrative & support | 2019 |