| Riverstone Court (Erith) NO.2 Residents Company Limited | Households | 1987 |
| RKL Associates Limited | Real estate | 2010 |
| RMS Property Investments Limited | Real estate | 2015 |
| Robin Facade Consultancy Services Limited | Professional & scientific | 2026 |
| Rockbottom Hitech Limited | Wholesale & retail | 2019 |
| Rockbottom Music Limited | Wholesale & retail | 2016 |
| Rocket Ranking Limited | Professional & scientific | 2014 |
| ROE Family Investments Limited | Real estate | 2022 |
| ROE Risk Advisory Limited | Professional & scientific | 2026 |
| Roke Investments Ltd | Real estate | 2020 |
| Rosary Properties (UK) Limited | Professional & scientific | 1984 |
| Roshan Hasnain Ltd | Wholesale & retail | 2025 |
| Royal & Co Ltd | Real estate | 2017 |
| RPK Legal Search Limited | Professional & scientific | 2010 |
| RTL Living Limited | Real estate | 2024 |
| Rusmiengineering Ltd | Construction | 2026 |
| Russell Square Limited | Hospitality | 2000 |
| Ryan Electrics Ltd | Construction | 2018 |
| Ryder Construction Group Ltd. | Construction | 2004 |
| S Alwash Ltd | Professional & scientific | 2022 |
| S J Armstrong Limited | Financial services | 2020 |
| S360DS Ltd | Health & social care | 2025 |
| S72LON01 Ltd | Real estate | 2022 |
| Safe Height Solutions Limited | Construction | 2008 |
| Safetysphere Limited | Manufacturing | 2026 |
| Saifee Smile Ltd | Health & social care | 2023 |
| Sales Training Made Simple Limited | Administrative & support | 2015 |
| Samsees Limited | Professional & scientific | 2010 |
| Samvik Technologies Limited | Information & communication | 2023 |
| Sana Heritage Limited | Real estate | 2017 |
| Sarah Blewett Ltd | Professional & scientific | 2026 |
| SAZ Solutions Ltd | Manufacturing | 2024 |
| SB Financial Services Ltd | Financial services | 2023 |
| SDS Entertainment Ltd | Education | 2019 |
| Seal the Deal Limited | Wholesale & retail | 2010 |
| Seba Real Estate (Woodland) Limited | Construction | 2020 |
| Seba Real Estate Limited | Real estate | 2023 |
| Sebella Limited | Households | 2019 |
| Secom PLC | Administrative & support | 1991 |
| Sequoia Realties Limited | Real estate | 2024 |
| Sgvm Investments Limited | Real estate | 2002 |
| Shazomo Advisory Ltd | Professional & scientific | 2022 |
| Sheila May's Limited | Other services | 2022 |
| Shpm Ltd | Health & social care | 2025 |
| Siif LLP | | 2025 |
| Silverbrook Property Group Ltd | Real estate | 2025 |
| Silverspray Limited | Professional & scientific | 2002 |
| SKM Tech Ltd | Information & communication | 2025 |
| Sky Heart Group Limited | Professional & scientific | 2016 |
| Sky Heart Limited | Construction | 2012 |
| Skybridge Capital LLP | | 2017 |
| Skybridge Investments Limited | Financial services | 2017 |
| Skys Heart Limited | Professional & scientific | 2016 |
| Slice Circle Limited | Hospitality | 2026 |
| Snapflare Ltd | Information & communication | 2024 |
| SNR Design & Build Ltd | Professional & scientific | 2024 |
| Snsn Ltd | Wholesale & retail | 2009 |
| Snsn Partners LLP | | 2020 |
| Social Media Made Simple Limited | Administrative & support | 2021 |
| Soft Glam Ltd | Wholesale & retail | 2026 |
| Solar Safe UK Ltd | Construction | 2014 |
| Sport Local Action CIC | Other services | 2024 |
| Squirrels Middleton Limited | Education | 2015 |
| ST. Nicholas Court (Plumstead) Management Company Limited | Households | 1997 |
| Star Media (London) Ltd | Information & communication | 2020 |
| Stoneseo Ltd | Information & communication | 2013 |
| Strand Designs Limited | Other services | 2022 |
| Strategic Emerging Economies Development Limited | Administrative & support | 2010 |
| Strong Driving & Industrial Recruitment Limited | Administrative & support | 2019 |
| Strong Investments Group Limited | Financial services | 2018 |
| Strong Payroll Services Limited | Administrative & support | 2015 |
| Strong Personnel Limited | Administrative & support | 2019 |
| Strong Property Investments Ltd | Real estate | 2019 |
| Stuart R. Scott Limited | Arts & recreation | 2007 |
| Studio C Hair Limited | Other services | 2017 |
| Studio C Treatments Limited | Other services | 2019 |
| Studio Spares & Repairs Limited | Wholesale & retail | 2019 |
| Styled by Natasha Ltd | Other services | 2021 |
| Styles Heating & Plumbing Limited | Professional & scientific | 2004 |
| Surrey Orange Cars Ltd | Transport & logistics | 2017 |
| Surrey Projects Ltd | Construction | 2024 |
| Sutherland Property Ltd | Households | 2018 |
| Swift House Cookery School Limited | Hospitality | 2013 |
| Syba Ltd | Information & communication | 2026 |
| Symco Shipping Ltd | Transport & logistics | 2018 |
| SYNERGY72 Ltd | Professional & scientific | 2015 |
| T P Cars Limited | Transport & logistics | 2010 |
| T&A Solutions Limited | Real estate | 2018 |
| T&J Fragrances LLP | | 2002 |
| T.V. Construction Ltd | Construction | 2020 |
| T48 Clin Limited | Real estate | 2025 |
| T48 Resi Limited | Real estate | 2025 |
| Table One Limited | Arts & recreation | 2010 |
| Take This Offline Ltd | Wholesale & retail | 2025 |
| Taleem Pro Ltd | Information & communication | 2026 |
| Talent Staffing Limited | Administrative & support | 2001 |
| Tall Mountain Properties Ltd | Extraterritorial | 2025 |
| Target Interior Design Limited | Administrative & support | 2011 |
| TC Edit Limited | Professional & scientific | 2025 |
| TCT Investment Property Limited | Real estate | 2025 |