| THE Hub Corp Limited | Transport & logistics | 2024 |
| THE Hub Royale Ltd | Real estate | 2026 |
| THE Hud-Hud Meded Limited | Wholesale & retail | 2025 |
| THE Human Performance Loop Ltd | Professional & scientific | 2025 |
| THE Hungry Circuit Limited | Wholesale & retail | 2026 |
| THE Hyderabad Kitchen Limited | Hospitality | 2024 |
| THE Hyderabadi Ltd | Hospitality | 2025 |
| THE Illyrians Lounge Ltd | Hospitality | 2023 |
| THE Institute of Osteopathy | Other services | 1989 |
| THE Institute of Traffic Accident Investigators | Other services | 1992 |
| THE Intersectionality Learning College Ltd | Professional & scientific | 2023 |
| THE Investment Decision Limited | Professional & scientific | 2012 |
| THE Ironing Board (UK) Ltd | Other services | 2012 |
| THE JAB Factory Ltd | Arts & recreation | 2026 |
| THE Jackdaw Company (UK) Limited | Wholesale & retail | 2013 |
| THE JAN Family Kitchen Limited | Hospitality | 2021 |
| THE Khayaal Theatre Company | Arts & recreation | 1998 |
| THE KJP Partnership Limited | Professional & scientific | 2022 |
| THE Larches (Luton) Limited | Households | 2004 |
| THE Larder Delicatessen Limited | Wholesale & retail | 2017 |
| THE Laser Clinics Group Ltd | Other services | 2015 |
| THE Lathwell Court Management Company Limited | Real estate | 2006 |
| THE Learning Patch Limited | Education | 2025 |
| THE Learning Source Limited | Education | 2015 |
| THE Lebowski PIG Ltd | Wholesale & retail | 2018 |
| THE Legal People Ltd | Professional & scientific | 2017 |
| THE Lettings Web Limited | Real estate | 2009 |
| THE Limes Ampthill Management Limited | Households | 2010 |
| THE Linen Cupboard Ltd | Wholesale & retail | 2022 |
| THE Living Pride Ltd | Wholesale & retail | 2013 |
| THE Local Butcher's Limited | Wholesale & retail | 2012 |
| THE Local Roofing Company Gloucestershire Ltd | Construction | 2024 |
| THE London Studio Productions Ltd | Information & communication | 2025 |
| THE Louche (Holdings) Limited | Extraterritorial | 2020 |
| THE Lounge (Flitwick) Limited | Hospitality | 2013 |
| THE Luton Salon Company Ltd | Other services | 2017 |
| THE Lutonian Ltd | Information & communication | 2022 |
| THE Mangoman Limited | Wholesale & retail | 2015 |
| THE Marble Arch Fabricators Ltd | Construction | 2018 |
| THE Marksman Security Group UK Ltd | Administrative & support | 2022 |
| THE Marriage Maker Ltd | Other services | 2024 |
| THE Marsh Farm Chippy Limited | Hospitality | 2023 |
| THE Medics PCN Limited | Health & social care | 2022 |
| THE Mighty Label Limited | Manufacturing | 2023 |
| THE Mirage Lounge 11 Ltd | Hospitality | 2025 |
| THE Movement Place Ltd | Arts & recreation | 2016 |
| THE MSP Growth Hub Limited | Professional & scientific | 2021 |
| THE MTL Instruments Group Limited | Manufacturing | 1984 |
| THE Muslim Golf Association CIC | Education | 2023 |
| THE Muslim Golf Company Ltd | Arts & recreation | 2020 |
| THE National Federation of Occupational Pensioners | Other services | 2009 |
| THE Next Best Place Limited | Health & social care | 2011 |
| THE Next Move Consultants Ltd | Administrative & support | 2025 |
| THE Nigerian Network Ltd | Information & communication | 2023 |
| THE Noah Enterprise | Administrative & support | 1996 |
| THE North Animal Ltd | Wholesale & retail | 2015 |
| THE O'Brien Consultancy Ltd | Professional & scientific | 2020 |
| THE Ojos Foods Ltd | Hospitality | 2015 |
| THE Orange Picture Club CIC | Information & communication | 2025 |
| THE Orchard (Houghton Regis) Management Co. Limited | Households | 2013 |
| THE Organic Shilajit Limited | Wholesale & retail | 2025 |
| THE Oriental Market Ltd | Wholesale & retail | 2024 |
| THE OUD Dude Limited | Wholesale & retail | 2024 |
| THE Overstone Manor Ltd | Hospitality | 2026 |
| THE Palace Hotel (Holdings) Ltd | Real estate | 2025 |
| THE Parade Watford Limited | Real estate | 2013 |
| THE Park Avenue Square PCM Management Services Ltd | Other services | 2024 |
| THE Pattern Studio Ltd | Professional & scientific | 2015 |
| THE Perceptron Global Ltd | Information & communication | 2022 |
| THE Performance Vehicle Group Limited | Transport & logistics | 2025 |
| THE Petal Dust Board Limited | Hospitality | 2020 |
| THE Philly Way Limited | Hospitality | 2024 |
| THE Piri Piri Company Limited | Hospitality | 2016 |
| THE Pivot Partnership Limited | Professional & scientific | 2021 |
| THE Platinum Group (2003) Limited | Administrative & support | 2003 |
| THE Platinum Isles Ltd | Wholesale & retail | 2025 |
| THE Privacy Business Group Ltd | Professional & scientific | 2020 |
| THE Privacy Business Ltd | Professional & scientific | 2022 |
| THE Property Gurus GSB Ltd | Real estate | 2019 |
| THE Property Refurb Group Limited | Real estate | 2024 |
| THE Property Shop Luton Ltd | Professional & scientific | 2009 |
| THE Pudding Shop Ltd | Hospitality | 2024 |
| THE Rajvir Foundation | Other services | 2021 |
| THE Receipt Book Company Ltd | Manufacturing | 1997 |
| THE Red WGC Ltd | Hospitality | 2017 |
| THE Redeemed Christian Church of GOD New Life Assembly Luton | Other services | 2021 |
| THE Resin LAB Ltd | Administrative & support | 2020 |
| THE Ridings Clapham Management Co Ltd | Real estate | 2024 |
| THE Road Warriors Tyre & Wheel Ltd | Wholesale & retail | 2026 |
| THE Roofing SOLUTION4U Ltd | Construction | 2023 |
| THE Rose Gene Ltd | Real estate | 2018 |
| THE Rose Muchoki Experience Ltd | Professional & scientific | 2023 |
| THE Royal Oak (Aspley Heath) Limited | Real estate | 2013 |
| THE Ruumo Group Ltd | Real estate | 2024 |
| THE Safer Luton Partnership Limited | Education | 2010 |
| THE Science Centre Ltd | Education | 2023 |
| THE Selfie Roamer Ltd | Arts & recreation | 2024 |
| THE Shaard Holdings Limited | Construction | 2016 |
| THE Shack Burgers Barton Ltd | Hospitality | 2025 |
| THE Shack Burgers Biggleswade Ltd | Hospitality | 2025 |