| 1 Cross Street Management Company Limited | Households | 2025 |
| 24/7 Passenger Transport Services Ltd | Administrative & support | 2014 |
| Aidec Ltd | Information & communication | 2014 |
| Alana's Hair Design Limited | Other services | 2015 |
| Amir Rugs Ltd | Wholesale & retail | 2010 |
| Angels Care at Home Limited | Health & social care | 2014 |
| Apollo GAS Ltd | Administrative & support | 2016 |
| Aspyr Ltd | Financial services | 2020 |
| Baker Oxlade Associates Limited | Professional & scientific | 2021 |
| Bellamy Wealth Management Limited | Financial services | 2022 |
| Bridge to Britain Ltd | Administrative & support | 2004 |
| Britannia FX Ltd | Administrative & support | 2024 |
| Buryhill Developments Ltd | Real estate | 2020 |
| Buryhill Properties Ltd | Real estate | 2020 |
| Bybrook Developments (Southern) Limited | Construction | 2016 |
| C Miller Electrical Ltd | Construction | 2015 |
| Callia Web Ltd | Professional & scientific | 2012 |
| Carter Moore Financial Advice and Wealth Management Ltd | Financial services | 2013 |
| Carter Moore LLP | | 2006 |
| Centraheat Heating & Plumbing Ltd | Construction | 2011 |
| Champions in Community Limited | Health & social care | 2022 |
| CI Electrical Contractors Ltd | Administrative & support | 2016 |
| Cotswold Surgical Partners LLP | | 2011 |
| Crapper & Sons Land Limited | Financial services | 2024 |
| Dalbe Ltd | Other services | 2025 |
| Dreambase Studios Limited | Information & communication | 2008 |
| Eden Facilities & Property Management Ltd | Water & waste | 2024 |
| Elevana Ltd | Professional & scientific | 1999 |
| Entelechy Training Limited | Professional & scientific | 2026 |
| FISTRAL102 Limited | Professional & scientific | 2014 |
| Greatsoft Limited | Information & communication | 2014 |
| H R Bespoke Plastering Ltd | Construction | 2022 |
| Halo Staffing Limited | Administrative & support | 2017 |
| Happy Ever Group Limited | Information & communication | 2025 |
| Hilcrest Holdings Limited | Financial services | 2025 |
| Hydra Construction Ltd | Extraterritorial | 2025 |
| Hydra Drones Ltd | Extraterritorial | 2025 |
| Hydra Enterprises Ltd | Financial services | 2025 |
| Hydraulics Modelling Services Limited | Professional & scientific | 1999 |
| IL Camino Restaurant Ltd | Hospitality | 2026 |
| Inspire Financial Planning Ltd | Administrative & support | 2009 |
| Interface Commercial Properties Ltd | Administrative & support | 2025 |
| JJE Developments Limited | Real estate | 2019 |
| JM Group (RWB) Ltd | Financial services | 2021 |
| K Charlton Limited | Wholesale & retail | 2012 |
| Keens Hill Investments Ltd | Administrative & support | 2025 |
| LEE Morgan Heating & Plumbing Limited | Construction | 2021 |
| Light Indigo Ltd | Information & communication | 2015 |
| Link Direct Care Limited | Health & social care | 2012 |
| M & U Property Holdings Ltd | Real estate | 2020 |
| Maxfield Motors (Wiltshire) Limited | Wholesale & retail | 2012 |
| Medevex Limited | Construction | 2018 |
| Mercer Hair & Beauty Ltd. | Other services | 2010 |
| Mermaid Court Estate Limited | Households | 2023 |
| Mick Dwyer Engineering Solutions Limited | Information & communication | 2020 |
| Mimi Enterprises Ltd. | Education | 2013 |
| NDO Autos Limited | Wholesale & retail | 2012 |
| Novum Live Limited | Professional & scientific | 2005 |
| NXT GEN Supplements Limited | Manufacturing | 2019 |
| Oxleaze Business Park Limited | Real estate | 2022 |
| Proas Commercial Ltd | Real estate | 2016 |
| Protect Your Driving Licence Ltd | Professional & scientific | 2016 |
| Quantum Performance Ltd | Information & communication | 2024 |
| Rapid Hire (Swindon) Limited | Administrative & support | 1998 |
| RPB Physiotherapy Ltd | Other services | 2020 |
| RWB Auctions Limited | Wholesale & retail | 2021 |
| S G Patel Ltd | Real estate | 2025 |
| Sampod Ltd | Real estate | 2013 |
| Sauleprint Ltd | Health & social care | 2015 |
| SCC Financial Limited | Administrative & support | 2025 |
| Simply Bookkeeping (Swindon) Ltd | Professional & scientific | 2021 |
| Skyline Aero Limited | Manufacturing | 2013 |
| Solarmetrics Limited | Information & communication | 2003 |
| Spankys Detailing Ltd | Wholesale & retail | 2024 |
| SSL Electrical Holdings Limited | Financial services | 2024 |
| Starmedi Healthcare Services Ltd Ltd | Health & social care | 2020 |
| Statehouse Private Wealth Limited | Professional & scientific | 2009 |
| Steinhardt Holdings Limited | Financial services | 2019 |
| Sterinox Ltd | Wholesale & retail | 2025 |
| Swiss Eventing Ltd | Arts & recreation | 2021 |
| Syndicate Brand Partnerships Ltd | Wholesale & retail | 2019 |
| THE Britannia Coin Company (RWB) Ltd | Wholesale & retail | 2026 |
| THE Computer Luggage Company Limited | Wholesale & retail | 1995 |
| THE Crazy Dog Limited | Hospitality | 2024 |
| THE Gigrig Ltd | Manufacturing | 2006 |
| Tiabella LLP | | 2025 |
| TMT Catering Ltd | Hospitality | 2018 |
| Treadstone Carpentry Solutions Ltd | Construction | 2008 |
| Trident Water Holdings Limited | Other services | 2014 |
| Trident Water Solutions Limited | Water & waste | 2002 |
| Two Seven Seven Ltd | Professional & scientific | 2023 |
| Tyto Ltd | Manufacturing | 2022 |
| UK Fresh Development Limited | Professional & scientific | 2012 |
| Washroom Supplies Ltd | Wholesale & retail | 2025 |
| Washrooms Direct Ltd | Wholesale & retail | 2025 |
| Waste Food Solutions Limited | Water & waste | 2014 |
| Wessex Pumps and Pipework Ltd | Professional & scientific | 2022 |
| Whiteflare Ltd | Professional & scientific | 2013 |
| Whitehillbusinessservices Limited | Administrative & support | 2006 |
| Wilkins Talent Solutions Limited | Administrative & support | 2025 |