| 27TF LLP | | 2023 |
| 27TF1 Ltd | Real estate | 2026 |
| 28 Hamilton Road RTM Company Limited | Households | 2006 |
| 28 Nibthwaite Road Management Company Limited | Real estate | 2007 |
| 28 ROX Park Freehold Management Ltd | Households | 2024 |
| 283 High Street Ltd | Construction | 2020 |
| 28STUDIO Limited | Professional & scientific | 2016 |
| 29 Lower Road Harrow Limited | Extraterritorial | 2006 |
| 29 Woodland Way Ltd | Households | 2019 |
| 2A Nibthwaite Road Ltd | Real estate | 2015 |
| 2B Enoshi London Ltd | Wholesale & retail | 2025 |
| 2G Enterprise Limited | Real estate | 2019 |
| 2G Four Oaks Limited | Real estate | 2025 |
| 2G Property Investments Limited | Real estate | 2021 |
| 2K Accountants & Advisory Ltd | Professional & scientific | 2026 |
| 2L Development Limited | Construction | 2010 |
| 2MINS Limited | Information & communication | 2026 |
| 2R1 Limited | Hospitality | 2020 |
| 2R10 Ltd | Hospitality | 2025 |
| 2R2 Ltd | Hospitality | 2021 |
| 2R4 Ltd | Hospitality | 2022 |
| 2R5 Ltd | Hospitality | 2023 |
| 2R6 Ltd | Hospitality | 2024 |
| 2R7 Ltd | Hospitality | 2025 |
| 2R8 Ltd | Hospitality | 2025 |
| 2R9 Ltd | Hospitality | 2025 |
| 2RK Restaurants Ltd | Hospitality | 2025 |
| 2S Tech Ventures Limited | Financial services | 2022 |
| 2THEWORLD Ltd | Other services | 2019 |
| 2THOUSAND14 Ltd | Professional & scientific | 2014 |
| 3 Dees Gems CIC | Wholesale & retail | 2023 |
| 3 Laws Entertainment Ltd. | Information & communication | 2023 |
| 3 MEN and a Wooden Spoon Limited | Professional & scientific | 2024 |
| 3 Rental Services Ltd | Administrative & support | 2021 |
| 3 Teignmouth Gardens Limited | Real estate | 2020 |
| 3 Warrington Road Ltd | Real estate | 2015 |
| 3-11 Beaumaris Green Company Limited | Households | 2006 |
| 3-6 Trevor Close RTM Company Limited | Financial services | 2021 |
| 30 - 36 Vittoria Street Management Limited | Construction | 2023 |
| 30 the Avenue Limited | Real estate | 2008 |
| 30 WD23 Ltd | Real estate | 2025 |
| 31 Dental Limited | Health & social care | 2022 |
| 31 Talbot Road Limited | Extraterritorial | 2015 |
| 3125 Haulage Ltd | Transport & logistics | 2023 |
| 313 Investments Ltd | Real estate | 2021 |
| 313 Optopharm Ltd | Health & social care | 2014 |
| 313 Partnership Limited | Health & social care | 2025 |
| 313 Trading Ltd | Wholesale & retail | 2025 |
| 3131 Optical Limited | Health & social care | 2025 |
| 3132 Optical Limited | Health & social care | 2025 |
| 3133 Optical Limited | Health & social care | 2025 |
| 3134 Optical Limited | Health & social care | 2026 |
| 32 Care Limited | Health & social care | 2022 |
| 32 Linksway Limited | Real estate | 2016 |
| 32 Wellesley Road Management Company Ltd | Real estate | 2019 |
| 321 Capital Limited | Financial services | 2020 |
| 33 Butler Avenue (Freehold) Limited | Households | 2014 |
| 33 Redington Road Limited | Hospitality | 1998 |
| 33 Rutland Gate Limited | Households | 1991 |
| 33LOOP Limited | Professional & scientific | 2025 |
| 34 Grange Park Limited | Households | 2019 |
| 34 Merivale Road Management Limited | Households | 2017 |
| 34 Rosary Gardens Limited | Households | 2005 |
| 34 Roxborough Road Management Limited | Households | 2007 |
| 343 Kilburn Ltd | Wholesale & retail | 2025 |
| 35 ST Mary's Road Limited | Construction | 2020 |
| 35 Tamworth Street Limited | Real estate | 2016 |
| 36 Burrell Road Ltd | Real estate | 2021 |
| 360 Aspire UK Ltd | Financial services | 2020 |
| 360 Degree Cleaning Ltd | Administrative & support | 2021 |
| 360 Roofing Specialists Ltd | Construction | 2021 |
| 360 Tech Solutions Limited | Information & communication | 2023 |
| 360 Waste Removal Ltd | Water & waste | 2025 |
| 360BUILD Solutions Ltd | Construction | 2019 |
| 360DIGIFY Consulting & Marketing Ltd | Information & communication | 2025 |
| 360MEDICARE Personnel Limited | Administrative & support | 2020 |
| 361 Clapham Road Leaseholders Limited | Households | 2002 |
| 365 Artificial Grass Ltd | Administrative & support | 2025 |
| 365VILLAS Limited | Information & communication | 2017 |
| 37 Spencer Road Freehold Limited | Households | 2022 |
| 37514W Ltd | Hospitality | 2025 |
| 38 Gloucester Road Limited | Real estate | 2002 |
| 38865 Limited | Hospitality | 2018 |
| 38865O Ltd | Hospitality | 2025 |
| 3A Ennismore Gardens Ltd | Real estate | 2019 |
| 3A-D Lynn Close Freehold Limited | Households | 2022 |
| 3C Imperial Court Ltd | Real estate | 2019 |
| 3D Applications Limited | Professional & scientific | 2013 |
| 3D Capital Investments Ltd | Financial services | 2021 |
| 3D Film Productions Limited | Information & communication | 2011 |
| 3D Motors Limited | Wholesale & retail | 2012 |
| 3DINVEST Group Ltd | Financial services | 2020 |
| 3E'S Accountants Group Limited | Professional & scientific | 2021 |
| 3E'S Accountants Limited | Professional & scientific | 2009 |
| 3E'S Business Services Limited | Professional & scientific | 2020 |
| 3E'S Hospitality & Restaurant Accountants Limited | Professional & scientific | 2024 |
| 3G Tunnelling Services Limited | Financial services | 2011 |
| 3HUNDRED60 Ltd | Households | 2022 |
| 3ICHA Limited | Real estate | 2020 |
| 3K + V Limited | Professional & scientific | 2002 |