| & Salt Limited | Wholesale & retail | 2024 |
| 05378720 Limited | Other services | 2010 |
| 08174806 Ltd | Transport & logistics | 2012 |
| 1066 Delicatessen & Cafe Limited | Wholesale & retail | 2015 |
| 11 Ludlow Croft Ltd | Real estate | 2025 |
| 134 the Mews Ltd | Other services | 2010 |
| 1492 Limited | Other services | 2017 |
| 14A Accountancy Limited | Professional & scientific | 2023 |
| 1876 Properties Ltd | Real estate | 2025 |
| 19TH Century Renaissance CIC | Arts & recreation | 2026 |
| 1ST 4 Windows Limited | Construction | 2006 |
| 1ST Automotive Ltd | Wholesale & retail | 2026 |
| 1ST Land Services Limited | Construction | 2021 |
| 212 Degrees Coaching Ltd | Education | 2020 |
| 2H Storage Solutions Ltd | Transport & logistics | 2003 |
| 2LEARNBEYONDLIMITS Ltd | Education | 2021 |
| 3 Bear Design Limited | Manufacturing | 2023 |
| 32 Church Street RTM Company Ltd | Administrative & support | 2016 |
| 32-36 Westgate Management Limited | Real estate | 2014 |
| 38 Westgate Management Company Limited | Households | 2018 |
| 3D Ortho Products Ltd | Information & communication | 2016 |
| 44 Capital Grantham Limited | Real estate | 2025 |
| 44 Capital Limited | Real estate | 2021 |
| 44 Capital Newco Limited | Real estate | 2005 |
| 44 Capital Scarborough Limited | Real estate | 2025 |
| 4D Bidco (4) Limited | Financial services | 2024 |
| 4D Bidco (44) Limited | Financial services | 2025 |
| 4D Canova Limited | Financial services | 2025 |
| 4D Capital Bidco (11) Limited | Real estate | 2025 |
| 4D Capital Investments Limited | Financial services | 2025 |
| 4D Capital Partners LLP | | 2023 |
| 4D Capital Propco (4) Limited | Financial services | 2024 |
| 4D Capital Propco (44) Limited | Financial services | 2025 |
| 4D Midco (4) Limited | Financial services | 2025 |
| 4D Spring Limited | Financial services | 2025 |
| 4G Building Projects Ltd | Construction | 2024 |
| 4G Joinery Ltd | Manufacturing | 2020 |
| 56 Cheltenham Mount (Harrogate) Limited | Households | 2005 |
| 6DB Studios Ltd | Manufacturing | 2019 |
| 88-90 Dewsbury Road Management Company Limited | Households | 2015 |
| 9 King Henry's Road Management Company Limited | Households | 1983 |
| 999 Fine Limited | Wholesale & retail | 2024 |
| A Breen Medical Services Limited | Professional & scientific | 2015 |
| A CUT Above Garden Maintenance Service Ltd | Administrative & support | 2024 |
| A Sharp Enterprises Ltd | Wholesale & retail | 2021 |
| A Star Scaffolding (Yorkshire) Limited | Construction | 2024 |
| A Stelling Building Contractors Limited | Construction | 2017 |
| A Stelling Building Contractors SPV1 Limited | Construction | 2026 |
| A T P Turbines Limited | Professional & scientific | 2011 |
| A T Physio Limited | Health & social care | 2013 |
| A Y Ground & Playing Field Contractors Limited | Administrative & support | 2002 |
| A&D-Up Ltd | Real estate | 2024 |
| A&J Guise Limited | Professional & scientific | 2021 |
| A. Mellor (Demolition) Limited | Construction | 2009 |
| A.K Family Karate and Fitness Limited | Education | 2012 |
| A.Kind Gardener Ltd | Administrative & support | 2023 |
| A1 Capital Limited | Financial services | 2007 |
| AA Electrical & Building Developments Ltd | Construction | 2018 |
| AAA Properties UK Group Limited | Construction | 2022 |
| AAA Specialist Medical Services Limited | Health & social care | 2018 |
| Aahc Ltd | Other services | 2024 |
| Aaron Whitehead Healthcare Ltd | Professional & scientific | 2012 |
| Aawdproducts Ltd | Wholesale & retail | 2025 |
| AB Sister Properties Ltd | Real estate | 2019 |
| Abbg Inns Ltd | Hospitality | 2025 |
| Abeceder Limited | Administrative & support | 2003 |
| ABH Joinery Kitchens & Bathrooms Limited | Construction | 2025 |
| Abode Design Build Limited | Construction | 2018 |
| Above & Beyond Mortgages (Yorkshire) Limited | Financial services | 2020 |
| AC & SON Building Services Limited | Construction | 2024 |
| Academic Publications Ltd. | Information & communication | 1998 |
| Accu Consultancy Limited | Professional & scientific | 2024 |
| Ace Cards Limited | Wholesale & retail | 2010 |
| ACQ Limited | Professional & scientific | 2006 |
| Actc Coaching Limited | Administrative & support | 2017 |
| Actc Consulting Ltd | Education | 2026 |
| Actc Padel Limited | Education | 2023 |
| Actimed Limited | Professional & scientific | 2006 |
| Active Watercoolers Ltd | Administrative & support | 2014 |
| Acton Jennings (Training) Ltd. | Education | 2003 |
| Acton Jennings LLP | | 2005 |
| AD Talent Recruitment Ltd | Administrative & support | 2025 |
| ADD Estates Ltd | Real estate | 2011 |
| Adlam Anaesthetics Limited | Health & social care | 2021 |
| ADM Car Buying Ltd | Wholesale & retail | 2022 |
| ADM Northfield Ltd | Extraterritorial | 2010 |
| Adrian RAY Photography Limited | Professional & scientific | 2010 |
| ADT Marketing Holdings Limited | Wholesale & retail | 2019 |
| ADT Marketing Limited | Wholesale & retail | 2019 |
| Advanced Power Care Limited | Wholesale & retail | 2015 |
| Advanced Web Services Limited | Professional & scientific | 2007 |
| Aerotech Abrasives Group Limited | Wholesale & retail | 2014 |
| AF Pearson Consultants Ltd | Extraterritorial | 2024 |
| Affilion Group Ltd | Transport & logistics | 2021 |
| Affilion Hub Limited | Wholesale & retail | 2025 |
| Affordable Storage Limited | Administrative & support | 2015 |
| Agabos Ltd | Wholesale & retail | 2024 |
| Agent Nest Ltd | Information & communication | 2025 |
| Agent Works Ltd | Information & communication | 2019 |
| AH Fleet Maintenance Ltd | Wholesale & retail | 2020 |