| Packington Square LLP | | 2007 |
| Palamino Developments Limited | Professional & scientific | 2003 |
| Palas Properties Limited | Real estate | 1999 |
| Paragon Luxury Villas Ltd | Administrative & support | 2020 |
| Patrick Lock Limited | Information & communication | 2008 |
| Pawsitive Health Group Ltd | Professional & scientific | 2025 |
| PAY Here Limited | Administrative & support | 2013 |
| Peacocks Pest Control Ltd | Administrative & support | 2024 |
| Pecho Mama CIC | Arts & recreation | 2026 |
| Penro Estates Limited | Real estate | 1971 |
| Perfume.Info | Health & social care | 2015 |
| Period Designs Limited | Professional & scientific | 2011 |
| Pestcontrol.Co.Uk (LE) Limited | Administrative & support | 2013 |
| Pestcontrol.Co.Uk (RH) Limited | Administrative & support | 2013 |
| Pestcontrol.Co.Uk (TN) Limited | Administrative & support | 2013 |
| Pestcontrol.Co.Uk (TW) Limited | Administrative & support | 2013 |
| Peter Hammond-Seaman Limited | Professional & scientific | 2023 |
| Peter Lister Consulting Limited | Professional & scientific | 2005 |
| Peter Radmall Associates Ltd | Professional & scientific | 2010 |
| Peter-Isaac-Francis Ltd | Extraterritorial | 2025 |
| Pfish Ltd | Extraterritorial | 2023 |
| Pharmac Limited | Construction | 2000 |
| Pinkberry Limited | Professional & scientific | 2016 |
| Pion Inc.(Uk) Ltd | Wholesale & retail | 1989 |
| Pipup Ltd | Arts & recreation | 2011 |
| PJ Autos Limited | Wholesale & retail | 1999 |
| PJ Home Upgrades Ltd | Administrative & support | 2026 |
| PJ Travel Solutions Ltd | Transport & logistics | 2021 |
| Playford Building Services Ltd | Construction | 2017 |
| Precious Little Bunnies Ltd | Other services | 2016 |
| Priors Farm Equine Veterinary Surgery Limited | Professional & scientific | 2008 |
| Proimage Solutions Ltd | Professional & scientific | 2010 |
| Propad Properties Limited | Real estate | 2015 |
| Prosperity HR Limited | Administrative & support | 2022 |
| Provincial 2012 Limited | Professional & scientific | 2011 |
| PT Transport Limited | Transport & logistics | 2002 |
| Q-Regulatory Limited | Professional & scientific | 2008 |
| QCL Group Limited | Financial services | 2022 |
| Quadrachem Laboratories Limited | Professional & scientific | 1981 |
| Quantaya Ltd | Manufacturing | 2022 |
| Quearney Industries Ltd | Wholesale & retail | 2025 |
| Questus Property Management Ltd | Real estate | 2006 |
| Quill Consulting Limited | Information & communication | 2012 |
| R3VERSE Design Ltd | Information & communication | 2023 |
| Raccord MEP Limited | Construction | 2020 |
| Rachel Aceso Ltd | Financial services | 2024 |
| Raffaella Fletcher Limited | Arts & recreation | 2014 |
| Rainbowell Limited | Health & social care | 2013 |
| RAY Ward Gunsmiths (London) Limited | Arts & recreation | 2006 |
| Redgates Limited | Real estate | 2006 |
| Regenerative Design Ltd | Education | 2012 |
| Renchild Holdings Limited | Real estate | 2016 |
| Resilo Limited | Administrative & support | 2015 |
| Retreats With Lucy Ltd | Health & social care | 2016 |
| Reverti Ltd | Real estate | 2023 |
| Rhodoleia Limited | Administrative & support | 2022 |
| Ritchie Brickwork Limited | Construction | 2021 |
| Ritchie Speech and Drama Limited | Education | 2012 |
| Riverside Trossachs Ltd | Professional & scientific | 2022 |
| Riverview Maintenance Company Limited | Real estate | 2007 |
| Rockhaven Hall Limited | Construction | 2022 |
| Routes & Retreats Rentals Ltd | Real estate | 2026 |
| Rudolf Steiner Press | Information & communication | 1991 |
| Rudolph Drummond Properties Ltd | Real estate | 2024 |
| Rumac Consultancy Ltd | Professional & scientific | 2018 |
| Rydon (Ealing) Limited | Construction | 2023 |
| Rydon Construction Limited | Construction | 1976 |
| Rydon Group Holdings Limited | Construction | 2017 |
| Rydon Group Limited | Construction | 1981 |
| Rydon High Lane Limited | Construction | 2023 |
| Rydon Holdings Limited | Construction | 2005 |
| Rydon Maintenance Limited | Administrative & support | 1982 |
| Rydon Packington Limited | Construction | 2007 |
| Rydon Regeneration Limited | Construction | 2004 |
| Rydon Sutton Limited | Construction | 2006 |
| Rystmede Technology Limited | Transport & logistics | 2008 |
| Rystwood Developments Limited | Real estate | 2005 |
| S & D Pet Supplies Limited | Wholesale & retail | 2011 |
| S&R Johnson Services Ltd | Wholesale & retail | 2021 |
| Sabre Sites Limited | Real estate | 2006 |
| Sagalore Ltd | Arts & recreation | 2026 |
| Saguarda Studios Ltd. | Information & communication | 2015 |
| Saimaa Construction and Development Limited | Construction | 2013 |
| Salty Cruisers Ltd | Education | 2026 |
| Sanjon Ltd | Information & communication | 2017 |
| Saul Surveying Limited | Professional & scientific | 2022 |
| SBF Naturopathy Limited | Health & social care | 2015 |
| School Lane (Forest ROW) Management Company Limited | Administrative & support | 1997 |
| Seasons Forest Kitchen Ltd | Administrative & support | 2026 |
| Seasons Forest ROW Limited(The) | Wholesale & retail | 1981 |
| Seefair Limited | Professional & scientific | 2023 |
| SEN Success Ltd | Professional & scientific | 2021 |
| Sennachie Limited | Administrative & support | 2022 |
| Service Line Management Ltd | Administrative & support | 1996 |
| Shadow IT Ltd | Information & communication | 2024 |
| Shadow Software Ltd | Information & communication | 2023 |
| Shoot and Edit Ltd | Information & communication | 2008 |
| Showerking Ltd | Wholesale & retail | 2012 |
| Sicane Ltd | Information & communication | 2008 |
| Sigcom Limited | Administrative & support | 2011 |