| Hildenborough Self Storage Ltd | Transport & logistics | 2021 |
| Hill Solutions Ltd | Professional & scientific | 2023 |
| Hillier Reynolds Limited | Real estate | 2013 |
| Hillingdon Court Management Company Limited | Households | 2006 |
| Hillmoore Holdings Limited | Professional & scientific | 1993 |
| Hills Consultants Services Limited | Professional & scientific | 2018 |
| Hillside Carpet Centre Limited | Wholesale & retail | 2007 |
| Hilltop Cottages Limited | Hospitality | 2016 |
| Himalayan London Limited | Hospitality | 2025 |
| Historic Classics Limited | Wholesale & retail | 2012 |
| Historic Collection Limited | Professional & scientific | 2008 |
| Historic Ferrari Limited | Wholesale & retail | 2008 |
| Historic Jaguar Limited | Wholesale & retail | 2008 |
| Historic Porsche Limited | Wholesale & retail | 2008 |
| Hitchen Mills Homes Limited | Construction | 2025 |
| HJ Groundwork Ltd | Construction | 2025 |
| HJS Electrical Southern Ltd | Construction | 2021 |
| HK Medical Systems Ltd | Information & communication | 2020 |
| Hntproperty GB Ltd | Real estate | 2024 |
| Hoad & Boyd Bespoke Joinery Ltd | Manufacturing | 2011 |
| Hoad & Boyd Ltd | Construction | 2019 |
| Hobbs Installations Limited | Construction | 2014 |
| Hoebridge LLP | | 2009 |
| Hoffleman Limited | Professional & scientific | 1998 |
| Holbrook & Collis Construction Ltd | Construction | 2022 |
| Holbrook Construction Southern Limited | Construction | 2017 |
| Holbrook Electrical Ltd | Extraterritorial | 2005 |
| Holders Commercial Ltd | Administrative & support | 2025 |
| Holdline Ltd | Wholesale & retail | 2012 |
| Hollow Rock Fitness Ltd | Arts & recreation | 2025 |
| Hollow Trees Drive Limited | Construction | 2014 |
| Hollydale Investments Limited | Extraterritorial | 1995 |
| Hollyville Café Limited | Hospitality | 2026 |
| Holman Business Intelligence Ltd | Professional & scientific | 2026 |
| Holmax 21 Limited | Professional & scientific | 2004 |
| Holmes Search Limited | Administrative & support | 2009 |
| Holmes Search Property & Investments Limited | Real estate | 2020 |
| Holmesdale Cricket Club (Trading) Limited | Arts & recreation | 2025 |
| Holmesdale Cricket Club Limited | Arts & recreation | 2014 |
| Holmewood Ridge (West) Limited | Real estate | 1967 |
| Holy Toad Ltd | Wholesale & retail | 2018 |
| Home & Space Ltd | Construction | 2019 |
| Home and Leisure 247 Limited | Wholesale & retail | 2024 |
| Home Farm Bidborough Management Company Limited | Households | 2018 |
| Home Helpers Hub Ltd | Real estate | 2023 |
| Home Town Properties Ltd | Real estate | 2016 |
| Home Visit Health Limited | Health & social care | 2023 |
| Homefield Advisory Ltd | Real estate | 2026 |
| Homefield Living Limited | Real estate | 2018 |
| Homefield Road Residents Association Limited | Households | 1999 |
| Homefix London Ltd. | Construction | 2014 |
| Homerun Homes Ltd | Real estate | 2022 |
| Homestayz Limited | Real estate | 2026 |
| Homewood Group Limited | Extraterritorial | 2006 |
| Homewood Homes Ltd | Real estate | 2011 |
| Homewood Rail Limited | Professional & scientific | 2006 |
| Honestlyreal Limited | Professional & scientific | 2007 |
| Honey Solutions Limited | Other services | 2013 |
| Honeywoodsix Ltd | Information & communication | 2020 |
| Honnywill & Co. Limited | Real estate | 2016 |
| Hoody Speaker Hoods Ltd | Wholesale & retail | 2012 |
| Hook Polo Ltd | Wholesale & retail | 2017 |
| Hooresh Estates Ltd | Real estate | 2025 |
| HOP Garden Limited | Wholesale & retail | 2012 |
| Hope Church Sevenoaks | Other services | 2011 |
| Hope Hill Ltd | Arts & recreation | 2023 |
| Hopkins Research Limited | Professional & scientific | 2018 |
| Horizon Consulting & Advisory Ltd | Professional & scientific | 2020 |
| Horizon Window Cleaners Ltd | Administrative & support | 2024 |
| Hornsey 38 Limited | Real estate | 2026 |
| Hospices of Hope Limited | Health & social care | 2000 |
| Hospices of Hope Trading Ltd | Hospitality | 1989 |
| Hotel & Industrial Suppliers (GB) Limited | Wholesale & retail | 1975 |
| Hotel N Apartment Limited | Hospitality | 2016 |
| House of Hall Ltd | Arts & recreation | 2012 |
| House of Neon Ltd | Wholesale & retail | 2020 |
| House of Sunset Ltd | Real estate | 2024 |
| House of Two Studio Ltd | Wholesale & retail | 2026 |
| HPH NO 1 Limited | Hospitality | 2026 |
| HPH NO 2 Limited | Hospitality | 2026 |
| HPH NO 3 Limited | Hospitality | 2026 |
| HPS Construction Limited | Construction | 2018 |
| HRS Healthcare Ltd | Administrative & support | 2022 |
| Hrsc Consulting Limited | Professional & scientific | 2018 |
| Hrvs Property Development Ltd | Real estate | 2019 |
| HS Developers UK Ltd | Transport & logistics | 2016 |
| HSI (Birmingham) Ltd | Construction | 2020 |
| HSI (Manchester) Limited | Real estate | 2023 |
| HSI Property Co Ltd | Real estate | 2024 |
| HSW Management Limited | Arts & recreation | 2023 |
| HT Custom Construction Ltd | Manufacturing | 2022 |
| Hub of Happy Limited | Health & social care | 2020 |
| Hubly Ltd | Information & communication | 2019 |
| Hubly Technologies Ltd | Information & communication | 2019 |
| Hudson Flooring Limited | Wholesale & retail | 2012 |
| Huimcph Ltd | Wholesale & retail | 2026 |
| Humaniseai Limited | Information & communication | 2017 |
| Humans Group Ltd | Professional & scientific | 2024 |
| Humbl Bites Limited | Manufacturing | 2026 |
| Hummingbird Concept Ltd | Construction | 2020 |