| 4AT Ltd | Information & communication | 2019 |
| 4C'S Solutions Limited | Construction | 2022 |
| 4D Strategies Ltd | Extraterritorial | 2015 |
| 4DASH Ltd | Real estate | 2021 |
| 4DS Procurement INT Limited | Professional & scientific | 2021 |
| 4H Alpha Properties Ltd | Construction | 2026 |
| 4H Houses & Homes Ltd | Construction | 2022 |
| 4H International Ltd | Hospitality | 2021 |
| 4K Commercials Ltd | Wholesale & retail | 2013 |
| 4PS Consulting Limited | Professional & scientific | 2020 |
| 4REEL Productions Limited | Information & communication | 2014 |
| 4U2NEST Ltd | Real estate | 2024 |
| 5 Part Consulting Limited | Professional & scientific | 2026 |
| 53 Quantum Ltd | Professional & scientific | 2005 |
| 59 Solutions Limited | Information & communication | 2015 |
| 6 George Street Freehold Ltd | Real estate | 2024 |
| 623 Curtis Consulting Limited | Professional & scientific | 2025 |
| 64 North Ltd | Wholesale & retail | 2021 |
| 662 Couriers Ltd | Transport & logistics | 2020 |
| 6880 Betton Grange (Society) Limited | Manufacturing | 2003 |
| 6M FAM Ltd | Wholesale & retail | 2022 |
| 7 Axis Engineering Limited | Administrative & support | 2006 |
| 7 Shades Limited | Professional & scientific | 2025 |
| 7 to 11 O Clock Ltd | Wholesale & retail | 2025 |
| 7-ONE Racing Limited | Wholesale & retail | 2020 |
| 703 Property and Development Limited | Construction | 2017 |
| 71 Cromwell Road Management Limited | Households | 1983 |
| 71-79 Cloatley Crescent RTM Company Limited | Households | 2023 |
| 76VICTORIAROADSN1 Limited | Real estate | 2026 |
| 79 Morris Street (Flats) Limited | Households | 2020 |
| 7EVEN Software Ltd | Information & communication | 2016 |
| 7MOBILESERVICES Ltd | Wholesale & retail | 2021 |
| 7Y Limited | Real estate | 2024 |
| 8 & 9 Gilmore Court Management Company Limited | Households | 2018 |
| 8 Gravel Walk Limited | Real estate | 2021 |
| 8 O Clock Limited Limited | Wholesale & retail | 2025 |
| 8 Swindon Road Management Company Limited | Households | 2000 |
| 80 London Road Freehold Ltd | Households | 2024 |
| 80 to 82 Onslow Gardens Limited | Households | 1996 |
| 86 Onslow Gardens (Freehold) Limited | Households | 2003 |
| 8FIFTY4 Ltd | Information & communication | 2014 |
| 9 Crosby Road (Freehold) Limited | Households | 2022 |
| 9 O Clock Express Limited | Wholesale & retail | 2023 |
| 9 Sonic Ltd | Information & communication | 2026 |
| 90 Chiswick Lane Limited | Real estate | 2023 |
| 911 Staffing Ltd | Administrative & support | 2021 |
| 99 Bath Road Management Company Limited | Households | 2016 |
| 99P Land Direct Ltd | Wholesale & retail | 2014 |
| 9E Leisure Limited | Hospitality | 2008 |
| 9Y Ltd | Real estate | 2019 |
| A & D Controls Limited | Information & communication | 2001 |
| A & D Corporate Group Limited | Construction | 2014 |
| A & D Scaffolding Associates Ltd | Construction | 2025 |
| A & E Electrical Wholesalers Limited | Wholesale & retail | 2022 |
| A & G Escrow Tapes Limited | Manufacturing | 2021 |
| A & J Real Estate Limited | Real estate | 2020 |
| A & K Services Ltd | Professional & scientific | 2017 |
| A & M Flooring Limited | Construction | 2009 |
| A & R Hornby Holdings Limited | Financial services | 2021 |
| A & S Flooring (Swindon) Limited | Construction | 2007 |
| A & S Investments Swindon Limited | Real estate | 2018 |
| A & S Trading Swindon Limited | Wholesale & retail | 2015 |
| A & Z Chowdhury Ltd | Transport & logistics | 2020 |
| A &D Home Extensions Limited | Real estate | 2014 |
| A Better Place Fitness Limited | Arts & recreation | 2025 |
| A Blackmore Limited | Administrative & support | 2023 |
| A C L Windows Limited | Construction | 2009 |
| A C Slade & Sons Limited | Other services | 2026 |
| A D Hunt Limited | Professional & scientific | 2009 |
| A Davies Computing Ltd | Information & communication | 2010 |
| A Ellis Motorsports Ltd | Arts & recreation | 2025 |
| A F Farming Ltd | Financial services | 2024 |
| A FEW Good MEN Ltd | Professional & scientific | 2002 |
| A G Stone Limited | Extraterritorial | 2013 |
| A Goddard Limited | Construction | 2012 |
| A Humphries & SON Roofing Limited | Construction | 2015 |
| A J Autos (Wroughton) Ltd | Professional & scientific | 2024 |
| A J Iles Holdings Limited | Financial services | 2014 |
| A J Kernahan Developments Limited | Construction | 2005 |
| A J Wright (Liverpool) Ltd | Wholesale & retail | 2012 |
| A Kaye Services Limited | Transport & logistics | 2017 |
| A Kennedy-Ballard Consulting Ltd | Public administration | 2025 |
| A L Associate Surveyors Ltd | Professional & scientific | 2015 |
| A M & E J Properties Ltd | Real estate | 2020 |
| A Plus Safety & Training Services Ltd | Other services | 2011 |
| A R Electrical (Swindon) Limited | Construction | 2014 |
| A R Harmony Ltd | Wholesale & retail | 2025 |
| A S Lyal Homes Ltd | Real estate | 2021 |
| A S Premium Funding Limited | Administrative & support | 2011 |
| A Scattred Janneh Ltd | Health & social care | 2019 |
| A Skip on Wheels Limited | Water & waste | 2024 |
| A Skyrme Consultancy Ltd | Professional & scientific | 2023 |
| A Star Construction Limited | Construction | 2008 |
| A Team (Swindon) Ltd | Health & social care | 2018 |
| A to B Transport and Recovery Ltd | Transport & logistics | 2019 |
| A Voice for the Animal Kingdom Limited | Wholesale & retail | 2024 |
| A Walklett Plastering Ltd | Construction | 2023 |
| A Willis Plumbing and Heating Limited | Construction | 2015 |
| A&A Building Construction Ltd | Construction | 2017 |
| A&A Plastic Surgery Limited | Health & social care | 2021 |