| HJA PPS Limited | Construction | 2023 |
| HJS Projects Ltd. | Construction | 2017 |
| HJW Busi Services Ltd | Wholesale & retail | 2025 |
| HJW Trading Ltd | Wholesale & retail | 2014 |
| Hk&Ch Ltd | Real estate | 2018 |
| HLC Corporation Limited | Professional & scientific | 2024 |
| HM Association Limited | Professional & scientific | 2025 |
| HMI AI Ltd | Information & communication | 2025 |
| HNE Futures Ltd | Manufacturing | 2017 |
| HNH Trading Ltd | Wholesale & retail | 2021 |
| HO Healthcare Limited | Administrative & support | 2012 |
| HOA Asset Management Ltd | Real estate | 2018 |
| HOA Capital Ltd | Real estate | 2020 |
| HOA Foundation Ltd | Real estate | 2021 |
| HOA Group Ltd | Financial services | 2020 |
| HOA Holdings Limited | Financial services | 2020 |
| Hoist & Chute Hire Ltd | Manufacturing | 2004 |
| Holborn Law Ltd | Professional & scientific | 2021 |
| Holdings SAK Limited | Financial services | 2019 |
| Holdings Tower Land Limited | Financial services | 2022 |
| Holistic Touch Ltd | Health & social care | 2021 |
| Hollibels Limited | Wholesale & retail | 2018 |
| Holly Good Consultancy Ltd | Professional & scientific | 2022 |
| Hollyrock Design Ltd | Manufacturing | 2015 |
| Hollywood Electrical & Maintenance Services Limited | Construction | 2002 |
| Hollywood Performing Arts Ltd | Education | 2019 |
| Hollywood Starlets Ltd | Arts & recreation | 2019 |
| Hollywood Tiny Stars Ltd | Arts & recreation | 2026 |
| Holmesdale Management Company Limited | Administrative & support | 1982 |
| Home Counties Landscaping Ltd | Construction | 2009 |
| Home First Liaison Community Interest Company | Health & social care | 2026 |
| Home Grown Holdings Limited | Wholesale & retail | 2024 |
| Home Hardware Distribution Limited | Wholesale & retail | 2000 |
| Home Management Solutions Limited | Real estate | 2024 |
| Home Statements Ltd | Other services | 2020 |
| Home-Start North West Kent Ltd. | Health & social care | 2012 |
| Homely-Ville Ltd | Real estate | 2026 |
| Homes 4 YOU Kent Limited | Real estate | 2017 |
| HOMES4CARE CIC | Hospitality | 2021 |
| Homeswagzz Ltd | Households | 2020 |
| Hometownconstruction Ltd | Construction | 2025 |
| Homeuni Ltd | Education | 2020 |
| Homeware Imports Limited | Wholesale & retail | 2017 |
| Homfix Limited | Wholesale & retail | 2018 |
| Honest Labour Transport Ltd | Wholesale & retail | 2016 |
| Honey Lifecare Ltd | Health & social care | 2023 |
| Honey Town Homes Ltd | Real estate | 2025 |
| Honeydale Farm & Tea Room Ltd | Wholesale & retail | 2024 |
| Hong HUI Ltd | Hospitality | 2021 |
| Honour & Glory Boxing Ltd | Arts & recreation | 2024 |
| Honsnack Ltd | Hospitality | 2026 |
| Hontop Ventures Limited | Hospitality | 2017 |
| Hoopers Group Limited | Education | 2020 |
| Hooripoori Ltd | Wholesale & retail | 2022 |
| Hope Help & Healing Limited | Information & communication | 2026 |
| Hopeful Mind Ltd | Education | 2022 |
| Hoptonacre Homes LLP | | 2005 |
| Horizon Collectibles Ltd | Wholesale & retail | 2026 |
| Horizon London Limited | Construction | 2026 |
| Horizon P&H Ltd | Construction | 2021 |
| Horizon Support Limited | Information & communication | 2022 |
| Hornchurch Catering Co Ltd | Hospitality | 2019 |
| Hornchurch Event Hire Limited | Hospitality | 2019 |
| Horridge & Mcqueen French Polishing Ltd | Construction | 2013 |
| Horrocks Project Management Ltd | Construction | 2013 |
| Horton Kirby MOT Station Limited | Wholesale & retail | 2016 |
| Hospitality Management Consulting Ltd | Professional & scientific | 2021 |
| Hotgrafix Digital Design Company Limited | Professional & scientific | 2013 |
| House 28 Ltd | Manufacturing | 2023 |
| House of ASE Limited | Information & communication | 2025 |
| House of Bloom Fragrance Ltd | Wholesale & retail | 2026 |
| House of Forreduci Limited | Manufacturing | 2025 |
| House of Inspiration Ministry Limited | Education | 2003 |
| House of KC CIC | Real estate | 2020 |
| Houseofsikana Ltd | Other services | 2026 |
| Houtwol Limited | Information & communication | 2019 |
| HOW Secure Systems Limited | Administrative & support | 2019 |
| Howard Accounting Ltd | Administrative & support | 2016 |
| Howard Ruse Associates Limited | Professional & scientific | 1993 |
| Howbury Preschool and Daycare Ltd | Education | 2007 |
| Howell Fusion Ltd | Administrative & support | 2020 |
| Howlett Property Holdings Ltd | Real estate | 2024 |
| Howlett Residential Limited | Real estate | 2011 |
| Howlett Sales Ltd | Real estate | 2024 |
| HP Electrical and Plumbing Ltd | Construction | 2025 |
| HPM Holdings Ltd. | Professional & scientific | 1997 |
| HPS Solutions Ltd | Construction | 2026 |
| HR Mine Limited | Administrative & support | 2021 |
| HR TAL3NT Ltd | Administrative & support | 2014 |
| HRA Shoes Ltd | Wholesale & retail | 2025 |
| Hrcw (Agency) Ltd | Professional & scientific | 2025 |
| HRG 13RR Ltd | Construction | 2026 |
| HRG 35LR Ltd | Construction | 2026 |
| HRG Care Holdings Limited | Financial services | 2026 |
| HRG Properties Ltd | Real estate | 2020 |
| HRG Property Holding Ltd | Financial services | 2026 |
| HRK Electrical Ltd | Construction | 2023 |
| HRP3 Ltd | Wholesale & retail | 2023 |
| Hrsolution Consulting (UK) Ltd. | Professional & scientific | 2011 |
| HS Capital & Property Developments Ltd | Real estate | 2025 |