| Pure Taste Foods Ltd | Hospitality | 2026 |
| PVO Threads Ltd | Wholesale & retail | 2020 |
| PVO to the World Ltd | Wholesale & retail | 2025 |
| Pylonegg Limited | Information & communication | 2023 |
| Quality Made Limited | Construction | 2016 |
| Quint Media Ltd | Professional & scientific | 2024 |
| R.A.M Legal Services Ltd | Extraterritorial | 2025 |
| Radani Ltd | Manufacturing | 2026 |
| Radiance Skin Limited | Wholesale & retail | 2025 |
| RAM Plumbing Ltd | Construction | 2023 |
| RAM Property Designs Ltd | Financial services | 2025 |
| Rapd Services Ltd | Information & communication | 2020 |
| Rayat Capital Ltd | Extraterritorial | 2021 |
| RB Tutoring Services Ltd | Education | 2026 |
| Read Metal and Clearance Ltd | Water & waste | 2022 |
| Reardon Pharma Services Limited | Other services | 2001 |
| Refined Build Co. South East Ltd | Construction | 2026 |
| Reg-Care Ltd | Administrative & support | 2016 |
| Regalia LDN Jewels Ltd | Wholesale & retail | 2026 |
| Rehoboth Property Services Limited | Real estate | 2025 |
| Remove Ltd | Wholesale & retail | 2025 |
| Retro Autocare Limited | Wholesale & retail | 2022 |
| Rewild at Heart Ltd | Manufacturing | 2024 |
| Reza Consulting Ltd | Water & waste | 2026 |
| Rhinos Property Ltd | Real estate | 2021 |
| Rhmc Limited | Administrative & support | 1998 |
| Ristan Services Limited | Health & social care | 2023 |
| Rivan Care Limited | Health & social care | 2025 |
| Riviera Hospitality Ltd | Hospitality | 2026 |
| Rivo Services Ltd | Information & communication | 2025 |
| RMG Accounting Services Limited | Professional & scientific | 2017 |
| Robert Whittock Limited | Professional & scientific | 2020 |
| Robustus Logic Ltd | Professional & scientific | 2026 |
| Romaworld Services Limited | Health & social care | 2014 |
| Rossjen Limited | Wholesale & retail | 2021 |
| Rotina Group Ltd | Construction | 2019 |
| Rotina Property Maintenance Ltd | Manufacturing | 2025 |
| Royale Frigate | Other services | 2024 |
| RRD Mechanical Services Limited | Construction | 2026 |
| RS Paraplanning Limited | Wholesale & retail | 2019 |
| Rscode Ltd | Information & communication | 2025 |
| Rsvb Ltd | Real estate | 2024 |
| RSW HQ Ltd | Other services | 2025 |
| Ryzin Assets Ltd | Real estate | 2020 |
| Réka Ilona Design Ltd | Manufacturing | 2024 |
| S Piper Design Ltd | Professional & scientific | 2021 |
| S&C Smiles Ltd | Health & social care | 2025 |
| Safe House Protect Ltd | Professional & scientific | 2026 |
| Safebarrier Security Protection Ltd | Administrative & support | 2025 |
| Saibot Services Limited | Construction | 2017 |
| Saintz Ltd | Wholesale & retail | 2020 |
| Salim Traders Ltd | Wholesale & retail | 2025 |
| Sandco Property Management Ltd | Construction | 2013 |
| Saucy Delivery Ltd | Wholesale & retail | 2019 |
| Saucy Dough Ltd | Hospitality | 2018 |
| Saxon Contracts & Design Ltd | Construction | 2024 |
| SAY Lets Ltd | Real estate | 2026 |
| SD IT Consulting Ltd | Information & communication | 2011 |
| SDS Motors Services Ltd | Other services | 2019 |
| Seamflow Construction Ltd | Construction | 2025 |
| Seamflowproperties Ltd | Hospitality | 2024 |
| Seamflowtech Ltd | Information & communication | 2023 |
| Seasquare Consulting Services (SCS) Ltd | Information & communication | 2014 |
| Seasquare Property Ltd | Real estate | 2018 |
| Seaweld Services UK Ltd | Mining & quarrying | 2017 |
| Sebastian Professional Drivers Ltd | Transport & logistics | 2014 |
| Security Solutions (ML) Ltd | Administrative & support | 2017 |
| Selhurst 151 Ltd | Real estate | 2024 |
| Sendfaxt Limited | Financial services | 2022 |
| Serialcoder Limited | Administrative & support | 2016 |
| SFM Motors Ltd | Wholesale & retail | 2024 |
| Shade Consultancy Ltd | Information & communication | 2024 |
| Shades Healthcare Limited | Administrative & support | 2023 |
| Shams Digital Ltd | Information & communication | 2026 |
| Sharp Electrical Limited | Energy | 2008 |
| SHF Services Ltd | Manufacturing | 2018 |
| Showsmith Operations Limited | Administrative & support | 2017 |
| Shree Boutique Limited | Wholesale & retail | 2025 |
| Shukrah Limited | Health & social care | 2022 |
| Siddons Holdings Ltd | Financial services | 2019 |
| Sight Sense Ltd | Health & social care | 2019 |
| Siid Consultant Ltd | Professional & scientific | 2012 |
| Sikasem Ltd | Other services | 2025 |
| Silk&Puple Global Limited | Wholesale & retail | 2016 |
| Silverhead Ltd | Real estate | 2025 |
| Simms BW Limited | Wholesale & retail | 2019 |
| Simon DEB Studio Ltd | Professional & scientific | 2026 |
| Site Helpers Ltd | Manufacturing | 2022 |
| SJR Rocks Ltd | Professional & scientific | 2015 |
| Skillspool Training C.I.C. | Education | 2012 |
| Skms Consulting Limited | Information & communication | 2016 |
| Sko-Kv Ltd | Transport & logistics | 2023 |
| Skvictor Ltd | Transport & logistics | 2024 |
| Skylite Ltd | Professional & scientific | 2015 |
| SLK Engineering Group Ltd | Professional & scientific | 2025 |
| Slofc Limited | Real estate | 2023 |
| Slofc Properties Limited | Real estate | 2020 |
| Smart Website Ltd | Wholesale & retail | 2019 |
| SMARTCLASS4U Ltd | Information & communication | 2026 |
| Smat Project Controls Ltd | Construction | 2025 |