| Elborough Limited | Professional & scientific | 2016 |
| ELBOROUGH115 Limited | Real estate | 2019 |
| Elcap Investments Limited | Administrative & support | 2009 |
| Elcap Properties LLP | | 2009 |
| Elch Group Ltd. | Wholesale & retail | 2016 |
| Elcombe Estates Limited | Construction | 1992 |
| Elcome Data Services Ltd | Information & communication | 2024 |
| Elcot Environmental Limited | Construction | 2018 |
| Elda Tech Services Ltd | Professional & scientific | 2024 |
| Eldene Chinese Takeaway Limited | Hospitality | 2012 |
| Elderbrook House Limited | Hospitality | 2019 |
| Elecservice Limited | Information & communication | 2000 |
| Electracare Limited | Other services | 2024 |
| Electracoms UK Limited | Construction | 2015 |
| Electrical and Electronics Solutions Ltd | Construction | 2020 |
| Electrical Bargain Ltd | Wholesale & retail | 2022 |
| Electrical Control Products (Swindon) Limited | Manufacturing | 2013 |
| Electrical Design Engineers Ltd | Professional & scientific | 2019 |
| Electrical Technolo-G Ltd | Construction | 2005 |
| Electrikobs Electrical Ltd | Construction | 2024 |
| Electroquest Limited | Transport & logistics | 2002 |
| Elee Ltd | Hospitality | 2024 |
| Elegant Food Solutions Ltd | Information & communication | 2024 |
| Elegant Property Solutions Ltd | Real estate | 2024 |
| Elegant Staffing Solutions Ltd | Administrative & support | 2024 |
| Elegant Systems PVT Ltd | Information & communication | 2008 |
| Elegant Windows and Doors Ltd | Construction | 2015 |
| Elemental Flow Ltd | Other services | 2025 |
| Elemental Sales Training Limited | Education | 2020 |
| Elements Events Limited | Arts & recreation | 2006 |
| Elements of Beauty Swindon Limited | Other services | 2013 |
| Elements of Finance Ltd | Professional & scientific | 2021 |
| Eleq Ltd | Construction | 2025 |
| Elevate Collective Ltd | Administrative & support | 2023 |
| Elevated Maintenance Ltd | Construction | 2025 |
| Eleven XI Tattoo Studio Swindon Ltd | Other services | 2024 |
| Elexical Limited | Health & social care | 2017 |
| ELI Stone Ltd | Administrative & support | 2025 |
| Eliasconsult Ltd | Information & communication | 2021 |
| Elidea Ltd | Transport & logistics | 2019 |
| Elif and Ozan Properties Ltd | Real estate | 2024 |
| Eliffood Limited | Hospitality | 2024 |
| Elisto Ltd | Information & communication | 2014 |
| Elit Grigore Build Ltd | Construction | 2026 |
| Elitcs Ltd | Information & communication | 2025 |
| Elite Bookkeeping Solutions Ltd | Professional & scientific | 2024 |
| Elite Contract Services (UK) Limited | Administrative & support | 2001 |
| Elite Dentnishry Ltd | Health & social care | 2021 |
| Elite Fitness Swindon Ltd | Arts & recreation | 2024 |
| Elite Home Painting & Renovations Ltd | Construction | 2024 |
| Elite Industrial Machinery Operation Ltd | Construction | 2020 |
| Elite Kebab Limited | Hospitality | 2013 |
| Elite Performance Psychology Ltd | Health & social care | 2021 |
| Elite Prize Draws Limited | Wholesale & retail | 2020 |
| Elite Properties Management Services Ltd | Real estate | 2023 |
| Elite Property Development (South-West) Ltd | Construction | 2025 |
| Elite Roofing Wiltshire Ltd | Construction | 2022 |
| Elite Skating Academy Ltd | Education | 2022 |
| Elite Sports Performance Medicine Ltd | Health & social care | 2024 |
| Elite Swimming Limited | Education | 2021 |
| Elite Therapies Ltd | Health & social care | 2025 |
| Elite-Electrical Swindon Ltd | Administrative & support | 2016 |
| Elix (Elliot Express) Limited | Transport & logistics | 2025 |
| Elixir Chiropractic Ltd | Health & social care | 2014 |
| Ella David Limited | Health & social care | 2022 |
| Ella Thomas Ltd | Professional & scientific | 2026 |
| Elle Estates Limited | Real estate | 2015 |
| Ellen Comms UK Limited | Wholesale & retail | 2025 |
| Ellendun Properties Ltd | Real estate | 2025 |
| Ellieb Gallery Ltd | Information & communication | 2025 |
| Ellingham Close (1-8) RTM Company Limited | Households | 2022 |
| Ellingham Close (17-24) RTM Company Limited | Households | 2022 |
| Ellingham Close (25-29) RTM Company Limited | Households | 2022 |
| Ellingham Close (30-37) RTM Company Limited | Households | 2022 |
| Ellingham Close (9-16) RTM Company Limited | Households | 2022 |
| Ellingham Close Ltd | Households | 2023 |
| Ellipsis Properties Limited | Real estate | 2018 |
| Elliptical Curves Limited | Information & communication | 2000 |
| Ellisons Garage Limited | Wholesale & retail | 2012 |
| Ellisons Transport Ltd | Water & waste | 2021 |
| Eloi Ltd | Wholesale & retail | 2025 |
| Elsa Nest Ltd | Real estate | 2024 |
| Elsie Leonard Limited | Professional & scientific | 2025 |
| Elucidate Accounting Ltd | Professional & scientific | 2019 |
| Elusive Arbitrage Ltd | Wholesale & retail | 2025 |
| Elvex Limited | Agriculture & fishing | 2026 |
| ELVICO3 Company Limited | Transport & logistics | 2021 |
| Elvin Swindon Limited | Hospitality | 2025 |
| Elysianheights Consultancy Limited | Professional & scientific | 2014 |
| Elysium Trades Ltd | Wholesale & retail | 2021 |
| EM Electrical Contractors Ltd | Construction | 2024 |
| EM Publication Services Ltd | Information & communication | 2025 |
| EM2U Solutions Limited | Information & communication | 2013 |
| EMA Active Ltd | Administrative & support | 2020 |
| Emaks Healthcare Ltd | Health & social care | 2021 |
| Emangami Limited | Health & social care | 2014 |
| Embasorb Limited | Other services | 2024 |
| Ember and Stone Ltd | Manufacturing | 2025 |
| Embodiment Self-Care Limited | Wholesale & retail | 2025 |
| Emenda Limited | Information & communication | 2005 |