| A1 Build (2010) Ltd | Construction | 2010 |
| Airside Management Limited | Real estate | 2012 |
| Anarr Freight Ltd | Transport & logistics | 2019 |
| Apni Meher KAR Limited | Hospitality | 2018 |
| Ascot Motors Ltd | Wholesale & retail | 2021 |
| Atvt Ltd | Construction | 2019 |
| Bagh Work Limited | Wholesale & retail | 2025 |
| Baytree Invest Limited | Real estate | 2025 |
| Bearne Child Care Limited | Education | 2011 |
| CKH Associates Limited | Transport & logistics | 2026 |
| Compac Computer Services Limited | | 1967 |
| D Bros Transport Ltd | Transport & logistics | 2025 |
| Dyers Hall Properties Limited | Real estate | 2020 |
| Emerald PUB Management Ltd | Professional & scientific | 2023 |
| Fortuna Financial Consultancy Ltd | Financial services | 2017 |
| Harlington Hospice Association Limited | Health & social care | 2001 |
| Harlington Installations Limited | | 1988 |
| Heathrow Motors Ltd | Administrative & support | 2021 |
| Jakes Property Maintenance Limited | Construction | 2022 |
| Karl Rooney Limited | Information & communication | 2011 |
| KYA HR Ltd | Administrative & support | 2025 |
| London Office Interiors Limited | Construction | 1979 |
| Madhira Limited | Information & communication | 2023 |
| MT Nest LLP | | 2022 |
| R.T.N. Building Repairs and Maintenance Limited | Extraterritorial | 1994 |
| Rishi Estates Limited | Real estate | 2009 |
| Rishy Estates Limited | Real estate | 2015 |
| Riva Management Ltd | Wholesale & retail | 2014 |
| Rose Petel Limited | Wholesale & retail | 2024 |
| Sharpenhoe Consulting Ltd | Real estate | 1996 |
| Shehbaz Narwal Logistics Ltd | Transport & logistics | 2024 |
| Smart Dent Tech Limited | Wholesale & retail | 2012 |
| Straight Line Auto Repairs Limited | Wholesale & retail | 2026 |
| THE Elms Estate Harlington LLP | | 2009 |
| THE Pyramid Schools Trust | Education | 2011 |
| Tradinvest Limited | Other services | 2021 |
| Tuition Time Ltd | Education | 2024 |
| Turnair Services Ltd | Manufacturing | 2008 |
| Vicky Construction Ltd | Construction | 2025 |
| Virtually Connected VA Ltd | Administrative & support | 2020 |