| 001 Fuse Ltd. | Information & communication | 2017 |
| 001 Ltd | Professional & scientific | 2001 |
| 05.05. Digital Ltd | Professional & scientific | 2020 |
| 08ESTATE Ltd | Health & social care | 2025 |
| 1 Browns Lane Limited | Real estate | 2019 |
| 1 Ridge Road Freehold Management Limited | Households | 2011 |
| 1 Stanhope Gardens Limited | Real estate | 2015 |
| 1 to 4 Management Ltd. | Households | 2022 |
| 1-3 Hampden Place RTM Company Ltd | Households | 2019 |
| 10 Kingdon Road Management Ltd | Households | 2007 |
| 101 Publications Limited | Information & communication | 2011 |
| 101 Vehicle Solutions Ltd | Wholesale & retail | 2019 |
| 101SOLUTIONS Ltd | Construction | 2023 |
| 104.5 Degrees Limited | Professional & scientific | 2018 |
| 10X Growth Ltd | Real estate | 2019 |
| 12 Carlisle Avenue, ST. Albans, Herts Limited | Households | 1982 |
| 12 Hillmarton Road N.7. Limited | Households | 1970 |
| 120 ST. Albans Road Management Ltd | Households | 2023 |
| 121 Hatfield Road Management Company Limited | Households | 2005 |
| 121 Medics Ltd | Health & social care | 2016 |
| 14 Prospect Estates Limited | Households | 2001 |
| 15 Sound Limited | Information & communication | 2024 |
| 150 ST Albans Road Management Company Limited | Households | 2009 |
| 18 Productions Ltd | Information & communication | 2026 |
| 1872 Ltd | Arts & recreation | 2013 |
| 1RJ Consulting Limited | Professional & scientific | 2026 |
| 1ST Choice Healthcare Recruitment Ltd | Administrative & support | 2015 |
| 1ST Class Energy Limited | Professional & scientific | 2009 |
| 1ST Note Music Limited | Education | 2018 |
| 1ST Track Dents Limited | Wholesale & retail | 2015 |
| 20 Lower Dagnall Street Management Limited | Real estate | 2013 |
| 21 Aces Ltd | Information & communication | 2026 |
| 21 Upper Lattimore Road Limited | Real estate | 2005 |
| 214 Hatfield Road Limited | Real estate | 2021 |
| 214 Havelock Ltd | Real estate | 2022 |
| 215 Kilburn Lane RTM Company Limited | Households | 2012 |
| 21ST Architecture Ltd | Professional & scientific | 2011 |
| 220 London Road Management Company Limited | Households | 2005 |
| 23 HOW Wood Ltd | Households | 2021 |
| 24 Furse Avenue Residents Company Limited | Households | 2001 |
| 24 Mount ROW (Flat 1) Limited | Real estate | 2025 |
| 24 Valentia Road (Oxford) Management Company Limited | Households | 2007 |
| 2468 Properties Limited | Households | 2018 |
| 24HR Solutions Group Holdings Ltd | Manufacturing | 2023 |
| 24HR Tech and Fabrication Solutions Ltd | Manufacturing | 2023 |
| 24HR Vehicle Solutions Ltd | Manufacturing | 2023 |
| 255-257 Liverpool Road Freehold Limited | Households | 2017 |
| 2BEXQUISITE Limited | Other services | 2013 |
| 2KG Limited | Wholesale & retail | 2016 |
| 3 Chester Heights Ltd | Real estate | 2023 |
| 3 Cousins Agency Ltd | Professional & scientific | 2025 |
| 3 Dragon Marketing Ltd | Professional & scientific | 2010 |
| 30 Prospect Road Freehold Limited | Households | 2019 |
| 34 Brock Street (Bath) Limited | Professional & scientific | 1992 |
| 34/34A Grosvenor Road Limited | Households | 2021 |
| 360 DOT NET Limited | Information & communication | 2003 |
| 3D Crowd CIC | Manufacturing | 2020 |
| 3D Visionworks Ltd | Professional & scientific | 2010 |
| 3FLO Ltd | Administrative & support | 2011 |
| 3RD Dimension Media (3RD4) Limited | Information & communication | 2008 |
| 3SIXTY Limited | Professional & scientific | 2025 |
| 3SIXTY Visual Marketing Limited | Professional & scientific | 2019 |
| 3UNDER4 Hospitality Ltd | Hospitality | 2021 |
| 3UNDER4 Investments Ltd | Financial services | 2025 |
| 4 & 6 Beresford Road Management Company Limited | Households | 1995 |
| 4 Claridge CT Ltd | Real estate | 2024 |
| 47 Camp Road Ltd | Financial services | 2010 |
| 4BIO Select I TXA SPV LP | | 2025 |
| 4CL Properties Ltd | Real estate | 2025 |
| 4WARD Accountancy Services Limited | Professional & scientific | 2005 |
| 5 Star Driveways & Patios Specialist Ltd | Construction | 2024 |
| 5/7 Berry Avenue Freehold Limited | Households | 2022 |
| 500 Entrepreneur Nominee Limited | Financial services | 2023 |
| 50NINE Health & Wellbeing Group Ltd | Wholesale & retail | 2019 |
| 51 Castle Street Limited | Real estate | 2014 |
| 53-56 Wyedale Flat Management Company Limited | Households | 2013 |
| 55 Records Ltd | Manufacturing | 2025 |
| 55 Verulam Road Ltd | Households | 2021 |
| 55ZERO Labs Ltd | Professional & scientific | 2018 |
| 5AW Ltd | Professional & scientific | 2023 |
| 5Y Consulting Limited | Professional & scientific | 2019 |
| 6 and 8 Blenkin Close (Freehold) Limited | Households | 2018 |
| 62,MESSINA Avenue Limited | Real estate | 1972 |
| 63 Argyle Road (Management Company) Limited | Households | 2004 |
| 6NINE26 Flowseed I LLP | | 2021 |
| 6NINE26 Healthsnap Seed+ LLP | | 2021 |
| 7 of 9 Starfleet Limited | Transport & logistics | 2023 |
| 7 Vaughan Road Limited | Real estate | 1998 |
| 7 Woodside Grove Management Limited | Real estate | 2006 |
| 71STALBANS Ltd | Hospitality | 2025 |
| 7EVEN Limited | Construction | 2021 |
| 7TH London Limited | Administrative & support | 2014 |
| 81 High Street Management Company Limited | Real estate | 1992 |
| 89 Priory Road, Management Limited | Households | 1989 |
| 8OASTY Ltd | Manufacturing | 2023 |
| 8TWELVE Consulting Limited | Professional & scientific | 2014 |
| 9 Beaconsfield Road Limited | Households | 1988 |
| 9, 9A, 11, 13 Gillian Avenue Ltd | Households | 2022 |
| 96BUILDS Ltd | Professional & scientific | 2026 |
| 9MILES47 Limited | Financial services | 2026 |