| PSS Training Limited | Other services | 2022 |
| PTC Management Limited | Professional & scientific | 2024 |
| PTN1FITNESS&SECURITY Ltd | Administrative & support | 2023 |
| PUB Co MI Ltd | Real estate | 2015 |
| Puddle House Consulting Limited | Professional & scientific | 2014 |
| Pura Vida London Ltd. | Administrative & support | 2013 |
| Pure Aviation Limited | Transport & logistics | 1996 |
| Pure AWS Limited | Information & communication | 2016 |
| Pure Crete Limited | Administrative & support | 1999 |
| Pure MOT Ltd | Wholesale & retail | 2018 |
| Pure Pricing Limited | Professional & scientific | 2000 |
| Pure Water Online Limited | Wholesale & retail | 2016 |
| Purely Bookkeeping Limited | Professional & scientific | 2020 |
| Purl Smith Ltd | Wholesale & retail | 2018 |
| Purple Antler Properties Ltd | Real estate | 2024 |
| Purple DOT IT Ltd | Administrative & support | 2023 |
| Purposely Ltd | Information & communication | 2015 |
| Pyron Ltd | Extraterritorial | 2015 |
| QBS Enterprises Ltd | Agriculture & fishing | 2022 |
| Qore Construct Ltd | Construction | 2019 |
| QST Limited | Wholesale & retail | 2003 |
| Quantum PT Ltd | Other services | 2025 |
| Quantum Support Ltd | Information & communication | 2025 |
| Quell Productions Limited | Information & communication | 2024 |
| Quercus FMC Ltd | Real estate | 2024 |
| Questingmoles Childcare Ltd | Health & social care | 2019 |
| Quill Systems Ltd | Information & communication | 2019 |
| Quixotic Architecture Limited | Professional & scientific | 2005 |
| R & R BEE Company Limited | Agriculture & fishing | 2024 |
| R & R Portfolio Ltd | Construction | 2019 |
| R & S Properties (South East) Limited | Real estate | 2023 |
| R a Country Services Ltd | Administrative & support | 2019 |
| R Crane Property Investments Ltd | Real estate | 2026 |
| R M R Construction Limited | Construction | 2013 |
| R P Property Trustees Ltd | Professional & scientific | 2019 |
| R Portfolio Ltd | Real estate | 2019 |
| R&M Health Limited | Wholesale & retail | 2025 |
| R. Perrin Signs Limited(The) | Real estate | 1947 |
| R156 Solutions Limited | Information & communication | 2017 |
| R3ALITY Projects Ltd | Information & communication | 2011 |
| Raben Consulting Ltd | Professional & scientific | 2025 |
| Raben Limited | Construction | 2020 |
| Rabson and Stark Limited | Administrative & support | 2014 |
| RAC Long Limited | Real estate | 2019 |
| Rachel Carse Associates Limited | Professional & scientific | 2021 |
| Racing Restorations Limited | Wholesale & retail | 2012 |
| RAD One Ltd | Manufacturing | 2013 |
| Radiale Ltd | Professional & scientific | 2024 |
| Rafcorp Limited | Wholesale & retail | 2023 |
| Raft Rehabilitation and Functional Training Ltd | Health & social care | 2016 |
| Raggetts Consulting Ltd | Professional & scientific | 2022 |
| Rail Traveller Media Ltd | Information & communication | 2020 |
| Rainbow Accounting Ltd | Professional & scientific | 2017 |
| Rainbow Media Publishing Ltd | Information & communication | 1999 |
| Rainbow Productions (Sussex) Limited | Information & communication | 1993 |
| Rakastaka Limited | Wholesale & retail | 2004 |
| Ramsahai Wellbeing Ltd | Other services | 2024 |
| Ranson Pearl Lambert Limited | Other services | 2017 |
| Rapid Charge Paradox Ltd | Professional & scientific | 2025 |
| Rapidward Ltd | Administrative & support | 2026 |
| Rare Properties Limited | Real estate | 2016 |
| Rarefind Executive Ltd | Professional & scientific | 2019 |
| Ravens Pest Control Solutions Ltd | Administrative & support | 2025 |
| Ravensworth Consultants Limited | Information & communication | 2000 |
| RAW Catering Recruitment Limited | Professional & scientific | 2011 |
| RAW Construction Ltd | Construction | 2016 |
| RAW Kids Gymnastics Haywards Heath Limited | Arts & recreation | 2024 |
| Raymond Martin George Elliott Limited | Professional & scientific | 2024 |
| Raynsford Education Ltd | Education | 2021 |
| Razelle Properties Limited | Professional & scientific | 2008 |
| RB IFA Limited | Financial services | 2015 |
| Rbke Trading Limited | Wholesale & retail | 2021 |
| Rbpm Sussex Ltd | Administrative & support | 2024 |
| Rcgb Limited | Hospitality | 2024 |
| RCM Partnership LLP | | 2021 |
| RCM Project Development Limited | Real estate | 2021 |
| RCR Tuition Ltd | Education | 2024 |
| RD Seale Limited | Professional & scientific | 2014 |
| RDB Coverall (Upvc) Limited | Construction | 2011 |
| Re-Teck Environmental Ltd | Transport & logistics | 2018 |
| Reab Physical Health Ltd | Other services | 2011 |
| Recardo Limited | Wholesale & retail | 2009 |
| Recruit Agent Limited | Extraterritorial | 2011 |
| Red Donkey Media Limited | Professional & scientific | 2022 |
| Red Door Software Ltd. | Information & communication | 2000 |
| Red Wine Caters Ltd | Hospitality | 2025 |
| Redline Application Services Limited | Information & communication | 2007 |
| Redline CNC Limited | Manufacturing | 2002 |
| Redline Software Limited | Information & communication | 2001 |
| Redpoint Strategies Ltd | Professional & scientific | 2025 |
| Redsoc Ltd | Professional & scientific | 2025 |
| Reece + Rico Removals Limited | Transport & logistics | 2025 |
| Reeds Property Maintenance and Administrative Services Limited | Real estate | 2022 |
| Reel Films Ltd | Information & communication | 2024 |
| Reeve Consultancy Limited | Professional & scientific | 2026 |
| Reform YOU Limited | Health & social care | 2026 |
| Refresh Designs Limited | Administrative & support | 2015 |
| Refresh Home Solutions Ltd | Construction | 2025 |
| Regency Decorating Limited | Construction | 2016 |
| Regency Security Limited | Administrative & support | 2002 |