| 219GROUP Ltd | Other services | 2025 |
| 219SJS Ltd | Construction | 2021 |
| 21:RS Ltd | Information & communication | 2021 |
| 21A Devonshire Ltd | Hospitality | 2025 |
| 21A Foley Street Limited | Households | 2023 |
| 21AR Ltd | Real estate | 2023 |
| 21ATOMS Ltd | Information & communication | 2024 |
| 21B Ltd | Real estate | 2021 |
| 21BEVENDEN RTM Company Limited | Households | 2023 |
| 21BG Ltd | Real estate | 2023 |
| 21BITCOIN Ltd | Information & communication | 2025 |
| 21BOTAN Ltd | Hospitality | 2026 |
| 21C Consultancy Limited | Professional & scientific | 2005 |
| 21C Innovation Partnerships Ltd | Professional & scientific | 2015 |
| 21C Ltd | Information & communication | 2021 |
| 21CF Shine Holdings UK Limited | Information & communication | 2014 |
| 21EDGWAREROAD Ltd | Real estate | 2022 |
| 21FAB Building Ltd | Construction | 2024 |
| 21GRANGEPARK RTM Company Limited | Households | 2014 |
| 21GW Ltd | Real estate | 2021 |
| 21HOBNAILS Ltd | Wholesale & retail | 2019 |
| 21HOME Ltd | Wholesale & retail | 2020 |
| 21K Digital Ltd | Education | 2019 |
| 21K Digital Media Ltd | Education | 2019 |
| 21K Hair One Limited | Manufacturing | 2019 |
| 21KENT INV Ltd | Real estate | 2024 |
| 21KEYS R&R Ltd | Real estate | 2025 |
| 21MD Limited | Manufacturing | 2026 |
| 21POINT5GROUP Ltd | Professional & scientific | 2024 |
| 21PROMOTIONS Ltd | Wholesale & retail | 2022 |
| 21ROOT Limited | Real estate | 2023 |
| 21SPLENDOUR Ltd | Hospitality | 2024 |
| 21ST Amendment Ltd | Hospitality | 2014 |
| 21ST Century Accommodation LLP | | 2017 |
| 21ST Century Actors Management Ltd | Other services | 1992 |
| 21ST Century Biotech Limited | Other services | 2021 |
| 21ST Century Brands Ltd | Professional & scientific | 2010 |
| 21ST Century Clinic Ltd | Health & social care | 1996 |
| 21ST Century Core Technologies Limited | Information & communication | 2014 |
| 21ST Century Design & Build Ltd | Construction | 2023 |
| 21ST Century Design Management Ltd | Information & communication | 2016 |
| 21ST Century Digital Teaching Limited | Information & communication | 2021 |
| 21ST Century Education Limited | Education | 2018 |
| 21ST Century Energy Limited | Energy | 2011 |
| 21ST Century Essentials Limited | Wholesale & retail | 2022 |
| 21ST Century Icon Awards Limited | Administrative & support | 2023 |
| 21ST Century Jewels Limited | Administrative & support | 2003 |
| 21ST Century Music Practice Research Centre C.I.C. | Professional & scientific | 2026 |
| 21ST Century Noise Limited | Arts & recreation | 2021 |
| 21ST Century Pathology Ltd | Health & social care | 2021 |
| 21ST Century Publishing Ltd | Information & communication | 2021 |
| 21ST Century Real Estate Ltd | Real estate | 2011 |
| 21ST Century Recruit Limited | Administrative & support | 1999 |
| 21ST Century Solutions Ltd | Information & communication | 2009 |
| 21ST Century Vapor Waste,Inc. | | 1990 |
| 21ST Club Limited | Administrative & support | 2020 |
| 21ST March Limited | Professional & scientific | 2006 |
| 21ST November Ltd | Information & communication | 2025 |
| 21ST Services Limited | Wholesale & retail | 2022 |
| 21STANDEN RTM Company Limited | Households | 2019 |
| 21STCENTURYRETRO Limited | Wholesale & retail | 2008 |
| 21STLEARNER Ltd | Education | 2019 |
| 21STUDIO Photo LAB Limited | Manufacturing | 2020 |
| 21T Limited | Administrative & support | 2017 |
| 21V Ltd | Information & communication | 2024 |
| 21VH Limited | Information & communication | 2026 |
| 22 & 22A Tremaine Road Management Limited | Households | 2006 |
| 22 - 28 Tenham Avenue Limited | Households | 2011 |
| 22 Acacia Road Management Limited | Real estate | 1985 |
| 22 Acol Road Limited | Households | 2006 |
| 22 Adventures Limited | Information & communication | 2015 |
| 22 Alexandra Park Road (Freehold) Limited | Real estate | 2018 |
| 22 and 24 Himley Road Limited | Households | 2025 |
| 22 Artesian Road Limited | Other services | 1996 |
| 22 Avington Grove Residents Association Limited | Hospitality | 2008 |
| 22 Bardolph Road Limited | Real estate | 2011 |
| 22 Beauchamp Road Limited | Households | 2000 |
| 22 Beech Road (RTE) Limited | Extraterritorial | 2008 |
| 22 Belsize Crescent NW3 Limited | Households | 2006 |
| 22 Belsize Square Management Limited | Real estate | 1990 |
| 22 BH Management Limited | Real estate | 2021 |
| 22 Bickersteth Road Limited | Administrative & support | 2019 |
| 22 Birds Ltd | Hospitality | 2025 |
| 22 Bishopsgate (Devco) Limited | Construction | 2015 |
| 22 Bishopsgate (Nominee 1) Limited | Construction | 2015 |
| 22 Bishopsgate (Nominee 2) Limited | Construction | 2015 |
| 22 Bishopsgate by Rhubarb Limited | Administrative & support | 2016 |
| 22 Bishopsgate General Partner Limited | Construction | 2015 |
| 22 Bishopsgate Limited Partnership | | 2015 |
| 22 Bishopsgate Location Limited | Real estate | 2019 |
| 22 Bolingbroke Road Ltd | Administrative & support | 2016 |
| 22 Buckingham Gate Management Company Limited | Administrative & support | 2017 |
| 22 Buckland Crescent RTM Company Limited | Households | 2010 |
| 22 Buckleigh Road Ltd | Real estate | 2024 |
| 22 Buckley Road Limited | Professional & scientific | 1998 |
| 22 Canning Crescent Freehold Limited | Real estate | 2014 |
| 22 Cardamon Project Limited | Information & communication | 2025 |
| 22 Cargill Road Limited | Real estate | 2006 |
| 22 Carlingford Road Residents Limited | Households | 1998 |
| 22 Castellain Road Limited | Households | 1984 |