| 1001 Industries Ltd | Transport & logistics | 2013 |
| 101PERCNT Ltd | Wholesale & retail | 2025 |
| 123 Domain Names Limited | Professional & scientific | 2018 |
| 123 Domain Networks Ltd | Professional & scientific | 2021 |
| 17 Consulting Ltd | Real estate | 2021 |
| 17 Sport Ltd | Arts & recreation | 2018 |
| 360 Degree Interior Ltd | Construction | 2023 |
| 3D Dog House Ltd | Arts & recreation | 2026 |
| 4PROPERTY Developers Limited | Real estate | 2023 |
| 5 Star Cleaning - South Lakes Ltd | Administrative & support | 2020 |
| 513AERO Ltd | Administrative & support | 2024 |
| 52 Degrees North (Cheltenham) Ltd | Real estate | 2011 |
| 8 Ball Graphics Limited | Manufacturing | 2012 |
| A & J Fresh Fish Ltd | Agriculture & fishing | 2021 |
| A B Ceilings (Cumbria) Ltd | Construction | 2005 |
| A Bells Seafood Limited | Agriculture & fishing | 2014 |
| A C Electrics (Barrow) Ltd | Construction | 2022 |
| A C Electrics Ltd | Administrative & support | 2018 |
| A G Bell & SON Limited | Water & waste | 2003 |
| A Spencer Group Limited | Administrative & support | 2019 |
| A Stitch Different Community Interest Company | Manufacturing | 2014 |
| A Thornburrow Roofing Limited | Construction | 2023 |
| A W Site Solutions Limited | Professional & scientific | 2025 |
| A Way of Learning CIC | Education | 2025 |
| A&A Marshall Properties Ltd | Real estate | 2025 |
| A&G Drylining Ltd | Construction | 2018 |
| A.B.C.T Property Developments Ltd | Real estate | 2026 |
| A.S.H. Bar Limited | Hospitality | 2019 |
| A1 IT Systems Ltd | Information & communication | 2009 |
| AB Jointing Ltd | Construction | 2026 |
| Abbey Guarding Services Ltd | Administrative & support | 2024 |
| Abbey Mill Coffee Shop Limited | Hospitality | 2017 |
| Abbey Road Regeneration Group Ltd | Construction | 2020 |
| Abbey Road Rooms & Studios (Barrow) Ltd | Real estate | 2015 |
| Abbingdon Safety Ltd | Construction | 2026 |
| ABI Rigg Limited | Professional & scientific | 2020 |
| Abid Khan Ltd | Wholesale & retail | 2025 |
| Above Entertainment Limited | Manufacturing | 2018 |
| Abrahamic Limited | Hospitality | 2017 |
| Abuelos Investments Ltd | Real estate | 2023 |
| AC Trading Group PVT Ltd | Wholesale & retail | 2026 |
| Access 4 U CIC | Health & social care | 2024 |
| Ace Eatery Ltd | Hospitality | 2023 |
| Acsr Estates Ltd | Real estate | 2026 |
| Adders Property Limited | Real estate | 2024 |
| Adders Van Limited | Hospitality | 2021 |
| Adft Wholesale Limited | Wholesale & retail | 2018 |
| ADS Roofing Ltd | Construction | 2024 |
| Advanced Roofing Supplies Holdings Limited | Construction | 2010 |
| ADW Testing Limited | Construction | 2011 |
| Ae&I Technical Services Limited | Administrative & support | 2021 |
| Aeshas Barrow Ltd | Hospitality | 2025 |
| Aesthetic Lakes Lettings Limited | Hospitality | 2022 |
| Aesthetic Lettings Limited | Hospitality | 2022 |
| Aesthetics by Laura W Ltd | Other services | 2020 |
| African Gold Mines (Uganda) Limited | Mining & quarrying | 2015 |
| African Gold Mines Limited | Mining & quarrying | 2014 |
| Again Again by Hannah Ltd | Manufacturing | 2025 |
| Ag’S Developments Limited | Other services | 2025 |
| Air Time Associates Ltd | Information & communication | 2016 |
| AK Maintenance Limited | Construction | 2002 |
| AKO Group Limited | Professional & scientific | 2021 |
| AKO Property Ltd | Real estate | 2024 |
| Aksys Solutions Limited | Information & communication | 2021 |
| Alan Kell Plumbing & Heating Engineers Ltd. | Construction | 2003 |
| Alan Mcgaughey Ltd | Construction | 2023 |
| ALB Electritec Ltd | Manufacturing | 2014 |
| Alda Investments Ltd | Other services | 2014 |
| Alinea Design Studio Ltd | Professional & scientific | 2021 |
| ALL About Anything Ltd | Professional & scientific | 2019 |
| Allan Bromley Construction Limited | Construction | 2003 |
| Allan Hartlebury Ltd | Information & communication | 2023 |
| Allies in Autism Ltd | Health & social care | 2025 |
| Almay Developments Limited | Real estate | 2024 |
| Alpha Groundworks & Building Services Ltd | Construction | 2021 |
| Alpha Odontal Care Ltd | Health & social care | 2024 |
| Alpha Project and Developments Ltd | Construction | 2016 |
| ALS WEX Construction Limited | Construction | 2025 |
| Alvis Valeting Limited | Administrative & support | 2022 |
| AM 3D Design Consultants Ltd | Professional & scientific | 2021 |
| Ambleside Carpets and Beds Ltd | Wholesale & retail | 2010 |
| AMD Inspection Services Limited | Administrative & support | 2015 |
| AML Medical Aesthetics Ltd | Other services | 2024 |
| AML Medical Service Limited | Health & social care | 2025 |
| Amore Pizza Barrow Ltd | Hospitality | 2025 |
| AMY Rogerson Fitness Ltd | Arts & recreation | 2019 |
| Anchor Fish Bar Limited | Hospitality | 2017 |
| Anchor RD Development Limited | Construction | 2026 |
| Andrew John Johnson Ltd | Information & communication | 2022 |
| Andrew Pearson Property Limited | Real estate | 2016 |
| Andy Scholes Ltd | Construction | 2021 |
| Anson Street Launderette Ltd | Other services | 2024 |
| Aooc Ltd | Wholesale & retail | 2024 |
| AP55 Technical Services Ltd | Professional & scientific | 2007 |
| Aperture North Ltd | Professional & scientific | 2025 |
| Apex Integrity Engineering Ltd | Professional & scientific | 2026 |
| APJ Commissioning and Project Management Limited | Professional & scientific | 2014 |
| Apollon Security Services Limited | Administrative & support | 2019 |
| Aquatek (Northern) Limited | Construction | 2008 |
| Aquila Engineering Ltd | Information & communication | 2026 |