| Rose Transport (UK) Limited | Transport & logistics | 2013 |
| Rosemary Sherwood Ltd | Health & social care | 2022 |
| Rosewood Residential Ltd | Real estate | 2017 |
| Round the Clock Scenery Limited | Construction | 2015 |
| RRK Group Limited | Real estate | 2023 |
| RS Investment Holdings Ltd | Real estate | 2016 |
| RS Racing Sport Ltd | Arts & recreation | 2024 |
| RS Trading Works Ltd | Real estate | 2013 |
| Rspk Limited | Construction | 2019 |
| Rsvp Collective Ltd | Professional & scientific | 2025 |
| RTK Properties Limited | Real estate | 2024 |
| Russell Scott Hostels Ltd | Hospitality | 2023 |
| Ruvin AI Limited | Information & communication | 2025 |
| RX Racing Limited | Transport & logistics | 2008 |
| S K Sardar Ltd | Health & social care | 2019 |
| S&R Holding Group Ltd | Financial services | 2024 |
| S&R Property Enterprise Ltd | Real estate | 2020 |
| Saaf Soof Cleaning Concierge Ltd | Administrative & support | 2022 |
| Saakalya Healing Ltd | Health & social care | 2020 |
| Sahil Logistics Ltd | Transport & logistics | 2025 |
| Saibhan Property Limited | Real estate | 2023 |
| Sakura Residences Ltd | Real estate | 2024 |
| Saley`S Limited | Wholesale & retail | 2008 |
| Sall Consulting Limited | Real estate | 2021 |
| Salvage Services Ltd | Wholesale & retail | 2024 |
| Salwa Shipping Agancy Limited | Transport & logistics | 2015 |
| Samali Coral Property Ltd | Real estate | 2022 |
| Sandeep Kumar Properties Limited | Real estate | 2018 |
| Sandhu and Multani Limited | Real estate | 2018 |
| Sandhu Property Corp Ltd | Real estate | 2024 |
| Sandhu Property Developments Limited | Construction | 2019 |
| Sandstone Medical Limited | Administrative & support | 2017 |
| SAT Construction & Development Limited | Construction | 2019 |
| Savino’S Fine Coffee Ltd | Manufacturing | 2025 |
| SBA One Limited | Wholesale & retail | 2021 |
| SCALP2FACE Micropigmentation Limited | Other services | 2024 |
| Scenic Blue Bulldog Limited | Information & communication | 2022 |
| Scenic Crafts Limited | Manufacturing | 2025 |
| Sculanux Ltd | Professional & scientific | 2025 |
| SDZ Capital Ltd | Real estate | 2020 |
| Sea NET Solutions Limited | Information & communication | 2003 |
| Seaspray Motors Ltd | Wholesale & retail | 2019 |
| Secure Technologies (UK) Limited | Professional & scientific | 2014 |
| Seek AI Solutions Ltd | Information & communication | 2024 |
| Sftb Ltd | Wholesale & retail | 2020 |
| Sheeshmahal Bucks Limited | Hospitality | 2015 |
| Shellsafe Storage Ltd | Administrative & support | 2026 |
| Short and NYE Ltd | Construction | 2020 |
| Shree Riddhi Siddhi Properties Ltd | Real estate | 2024 |
| Shri Nagaji IT Solutions Ltd | Information & communication | 2012 |
| Sibel Lettings Ltd | Real estate | 2024 |
| Sibel Properties Ltd | Hospitality | 2021 |
| Sid&Co London Limited | Information & communication | 2025 |
| Sidhu Gratus Holdings Ltd | Construction | 2024 |
| Silverscreen Security Ltd | Administrative & support | 2022 |
| Simar Property Management Ltd | Real estate | 2024 |
| Simba Settlements Ltd | Real estate | 2024 |
| Simon Elliott Limited | Construction | 2014 |
| Simon Smith Events Limited | Professional & scientific | 2004 |
| Simple People Solutions Ltd | Administrative & support | 2011 |
| Singh Builders Merchant Ltd | Construction | 2018 |
| Singh Glazing Limited | Manufacturing | 2020 |
| Sistas Bliss Ltd | Wholesale & retail | 2024 |
| Sitetek Ltd | Information & communication | 2026 |
| SK Retail Group Ltd | Wholesale & retail | 2025 |
| Skillocampus Limited | Education | 2025 |
| Skin LAB Aesthetics Ltd | Other services | 2023 |
| Skinnytan UK Limited | Manufacturing | 2014 |
| Skyways Aluminium Systems Limited | Real estate | 1987 |
| Skyways FM Ltd | Construction | 2025 |
| Slate Studio Pilates Ltd | Arts & recreation | 2025 |
| Smartvest Capital Ltd | Real estate | 2025 |
| SMB Autos Ltd | Manufacturing | 2016 |
| SMP Dhillon Transport Ltd | Transport & logistics | 2016 |
| Smrithi Solutions Limited | Professional & scientific | 2010 |
| Smuji Ltd | Professional & scientific | 2025 |
| SN Auto Services Ltd | Wholesale & retail | 2025 |
| Solocal Travel Ltd | Administrative & support | 2018 |
| Somalex Business Change Services Ltd | Information & communication | 2024 |
| Soul Warrior Records Limited | Information & communication | 2022 |
| Southwaterstreet Ltd | Transport & logistics | 2006 |
| SP73 Ltd | Construction | 2019 |
| Speedeliveries Ltd | Transport & logistics | 2026 |
| Spfx Dept Limited | Arts & recreation | 2026 |
| SPM Project Consultants Limited | Professional & scientific | 2024 |
| Sportscar Metalworks Limited | Manufacturing | 1997 |
| Spotlight AV Ltd | Other services | 2022 |
| SPW SET Production Ltd | Construction | 2011 |
| SSG Capital Investments Ltd | Real estate | 2025 |
| SSG Investment Solutions Ltd | Real estate | 2025 |
| St.Ledger O'Sullivan Property Holdings Ltd | Real estate | 2024 |
| Stacey Walker VA Limited | Administrative & support | 2021 |
| Staff Solutions London Ltd | Administrative & support | 2022 |
| Staffing Match Ltd | Administrative & support | 2014 |
| Stamp Group Limited | Real estate | 2019 |
| Star Hawk Builder Merchant Ltd | Construction | 2017 |
| Start UP Hands Limited | Information & communication | 2018 |
| Starwalker Consulting Ltd | Professional & scientific | 2024 |
| STAYACTIVE4LIFE Limited Liability Partnership | | 2012 |
| Steadfast Secure Ltd | Administrative & support | 2022 |