| AJA Business Ltd | Hospitality | 2019 |
| AJA Tiling Ltd | Construction | 2023 |
| AJC Roofing & Consultancy Limited | Construction | 2024 |
| Ajhf Holdings Limited | Financial services | 2024 |
| AJK Developments Limited | Administrative & support | 2009 |
| Ajparmersgreen Ltd | Professional & scientific | 2021 |
| AJT Capital Limited | Financial services | 2022 |
| AK Cheltenham Ltd | Hospitality | 2026 |
| AK Gynae Ltd | Health & social care | 2021 |
| AK Urbanism Limited | Professional & scientific | 2017 |
| Akanishta Kadampa Buddhist Centre | Education | 2008 |
| AKH Authentic Ltd | Other services | 2017 |
| Akihi Limited | Manufacturing | 2023 |
| Akin Productions Ltd | Information & communication | 2022 |
| Akxd Ltd | Information & communication | 2026 |
| AL Haitham Construction Ltd | Construction | 2026 |
| AL Rashid Enterprises Ltd | Wholesale & retail | 2024 |
| Al-Faperio Ltd | Health & social care | 2013 |
| Al-Hashimi Group Ltd | Construction | 2023 |
| Alan Aston Motor Engineers Limited | Wholesale & retail | 2000 |
| Alan Dick Broadcast Limited | Manufacturing | 2011 |
| Alan Oxenbury Ltd | Education | 2013 |
| Alaska Consulting Limited | Construction | 2023 |
| Alastair James Insurance Brokers Limited | Financial services | 2017 |
| Alation UK Ltd | Information & communication | 2018 |
| Albany Windows Ltd | Construction | 2010 |
| Alberry Holdings Ltd | Information & communication | 2025 |
| Albert Trans Solution Limited | Transport & logistics | 2026 |
| Albion Construction (Cheltenham) Ltd | | 1999 |
| Albion Lodge Developments Limited | Construction | 2016 |
| Albion Lodge Limited | Health & social care | 2014 |
| Albion Place Reading Limited | Households | 1987 |
| Albright IP Limited | Professional & scientific | 2014 |
| Albright Product Design Limited | Professional & scientific | 2013 |
| Albright Property Ltd | Real estate | 2017 |
| Alchemy Wellbeing Ltd | Manufacturing | 2014 |
| Alcohol Ltd | Professional & scientific | 2003 |
| Alder MAY Limited | Extraterritorial | 2014 |
| Alderney Estates Limited | Real estate | 1996 |
| Alderney ST Ltd | Professional & scientific | 2025 |
| Alemdara Limited | Wholesale & retail | 2011 |
| Alex Frame Associates Limited | Administrative & support | 2015 |
| Alexander Burn Limited | Other services | 2005 |
| Alexander Burn Services Ltd | Real estate | 2017 |
| Alexander Chapel Recruitment Limited | Administrative & support | 2007 |
| Alexander's Care & Support Limited | Health & social care | 2014 |
| Alexanders' Property Development Limited | Construction | 2022 |
| Alexandra House Gloucester RTM Company Limited | Households | 2015 |
| Alexus Transport Ltd | Transport & logistics | 2024 |
| Alfa Avionics Limited | Information & communication | 1993 |
| Alfa Master Limited | Professional & scientific | 2022 |
| Alfa Team UK Ltd | Wholesale & retail | 2023 |
| Alfege Advisory Limited | Professional & scientific | 2017 |
| Alfriston Care Ltd | Health & social care | 2023 |
| Algabrit LLP | | 2003 |
| ALI Hawa Ltd | Hospitality | 2017 |
| Alia Collective Ltd | Other services | 2026 |
| Aliaa Limited | Health & social care | 2014 |
| Alice Jewellers Ltd | Wholesale & retail | 2018 |
| Alician Travel Ltd | Administrative & support | 2018 |
| Align Marketing & Sales Ltd | Financial services | 2025 |
| Alina Candles Limited | Wholesale & retail | 2005 |
| Aline Roofing Ltd | Construction | 2018 |
| Alive BIA Ltd | Administrative & support | 2024 |
| Alix Sibbald Creative Limited | Professional & scientific | 2017 |
| ALL About Fun.Com Limited | Arts & recreation | 2005 |
| ALL About Scaffolding Ltd | Construction | 2012 |
| ALL About the Dog Academy Ltd | Other services | 2021 |
| ALL Answer Accounting Services Ltd | Professional & scientific | 2022 |
| ALL for Gadgets Ltd | Wholesale & retail | 2019 |
| ALL Golds Rugby Limited | Professional & scientific | 2017 |
| ALL Heli Parts Limited | Extraterritorial | 2020 |
| ALL Heli Spares Limited | Extraterritorial | 2020 |
| ALL Purpose Scaffolding Ltd | Construction | 2024 |
| ALL Round Hound Ltd | Other services | 2025 |
| ALL Saints Court Residents Association Limited | Households | 1965 |
| ALL Saints Villas Road 1965 Limited | Extraterritorial | 2014 |
| ALL Saints' Academy, Cheltenham | Education | 2009 |
| ALL Seasons Industrial Roofing Limited | Construction | 2003 |
| ALL Seasons Residential Parks Limited | Hospitality | 2015 |
| ALL the Best Marketing Ltd | Professional & scientific | 2025 |
| ALL Things Decadent Ltd | Manufacturing | 2024 |
| ALL World Antiques Ltd. | Wholesale & retail | 2016 |
| Allan Jenkins Complete Building Services Limited | Construction | 2020 |
| Allbeing Ltd | Health & social care | 2022 |
| Allen IT Cheltenham Ltd | Information & communication | 2020 |
| Allenfield Ltd | Professional & scientific | 2025 |
| Allenfield Properties Ltd | Real estate | 2018 |
| Alliance Support Solutions CIC | Professional & scientific | 2025 |
| Alliander Limited | Professional & scientific | 2019 |
| Allied Forces Limited | Manufacturing | 2012 |
| Allstar Trading Ltd | Wholesale & retail | 2026 |
| Allthedarts Ltd | Arts & recreation | 2025 |
| Allyce Ltd | Health & social care | 2020 |
| Allyn Systems Ltd | Administrative & support | 2016 |
| Alma Kaizen Limited | Education | 2009 |
| Almholme Bess Limited | Energy | 2022 |
| Almholme Solar Limited | Energy | 2022 |
| Almighty Records Limited | Information & communication | 1992 |
| Almond Logistics Ltd | Transport & logistics | 2019 |