| Hampton Gardens Maintenance Limited | Households | 1966 |
| Hampton Green (Plots 44-53) Residents Association Ltd | Households | 1997 |
| Hampton Hill Business Association Limited | Administrative & support | 2008 |
| Hampton Hill HCW Ltd | Other services | 2020 |
| Hampton Hill Plasterer's Ltd | Construction | 2017 |
| Hampton Hounds Grooming Ltd | Other services | 2015 |
| Hampton House Trading Ltd | Wholesale & retail | 2024 |
| Hampton Hub Limited | Hospitality | 2019 |
| Hampton Inspired Hub Ltd | Administrative & support | 2019 |
| Hampton Motors (TW12) Ltd | Wholesale & retail | 2015 |
| Hampton Nails&Beauty Limited | Other services | 2023 |
| Hampton Nursery Limited | Health & social care | 2022 |
| Hampton Payroll Services Limited | Hospitality | 2017 |
| Hampton Polo Club Ltd | Information & communication | 2024 |
| Hampton Pool Trust | Arts & recreation | 1984 |
| Hampton Relocation Consulting Ltd | Real estate | 2015 |
| Hampton Risk and Security Management Ltd | Administrative & support | 2024 |
| Hampton School | Education | 2007 |
| Hampton School Enterprises Limited | Arts & recreation | 1994 |
| Hampton Solutions Ltd | Hospitality | 2024 |
| Hampton Thermodynamics Limited | Professional & scientific | 2016 |
| Hampton Tyres & MOT Ltd | Wholesale & retail | 2018 |
| Hampton Wood Floors Limited | Construction | 2015 |
| Hamptons Law Firm Limited | Professional & scientific | 2023 |
| Hamptontakeaway Limited | Hospitality | 2026 |
| Hanna’S Nails & Spa Limited | Other services | 2026 |
| Hanover Electrical Services Ltd | Energy | 2019 |
| Hanyoung Scholarship Foundation CIC | Health & social care | 2019 |
| Hapaca Studio Ltd | Manufacturing | 2019 |
| Happy in School Project C.I.C. | Education | 2025 |
| Hardcat Business Services Limited | Professional & scientific | 1993 |
| Hardcat Limited | Information & communication | 1993 |
| Hardwood Hub Ltd | Construction | 2025 |
| Harleyqueen Properties Limited | Households | 1982 |
| Harmonium Properties Ltd | Extraterritorial | 2019 |
| Harmsworth Holdings Limited | Professional & scientific | 2024 |
| Harper Cavendish (International) Ltd | Professional & scientific | 2010 |
| Harrat Limited | Information & communication | 2014 |
| Harris Properties (Hampton) Limited | Real estate | 1971 |
| Hathor BH Ltd | Real estate | 2024 |
| Hathor Hartfield Limited | Real estate | 2015 |
| Hathor Property Limited | Real estate | 2014 |
| Hatterall View Investments Ltd | Real estate | 2018 |
| Hattersley Associates Limited | Professional & scientific | 2018 |
| Haya UK Services Ltd | Construction | 2020 |
| Hayling Roads Limited | Real estate | 2024 |
| Hazel & MAK Limited | Real estate | 2013 |
| HD Lifts Ltd | Manufacturing | 2020 |
| Hdlt Company Limited | Real estate | 2025 |
| Healthy Wealthy Happy Ltd | Health & social care | 2020 |
| Heatham Homes Ltd | Households | 2016 |
| Heathside Limited | Real estate | 2019 |
| Hedgewood Limited | Real estate | 2023 |
| Heffington LE Blond Ltd | Real estate | 2018 |
| Help YOU Buy Ltd | Real estate | 2020 |
| Hemmet Homes Ltd | Real estate | 2017 |
| Hengelloe Ltd | Real estate | 2015 |
| Henrietta Hogan Interiors Ltd | Construction | 2019 |
| Hergo UK Ltd | Professional & scientific | 2019 |
| Heritage Gates & Automation Limited | Construction | 2011 |
| Hermanos Burgers Ltd | Hospitality | 2021 |
| Hestia Consulting Ltd | Professional & scientific | 2025 |
| HH Concept Ltd | Construction | 2022 |
| HH D Marketing Ltd | Professional & scientific | 2022 |
| HH Vintage Ltd | Manufacturing | 2017 |
| HH01 Ltd | Financial services | 2025 |
| High Point NDT Limited | Professional & scientific | 2023 |
| Higham Grant Ltd | Arts & recreation | 2019 |
| Hightest Technology Limited | Manufacturing | 2017 |
| Hiik Limited | Real estate | 2019 |
| Hilary M Wilson Associates Limited | Professional & scientific | 2006 |
| Hill Court Freehold Limited | Households | 2004 |
| Hill House Residents Association Ltd | Households | 1997 |
| Hillbrook Gardens (Weybridge) Residents' Association Limited | Households | 1964 |
| Hillburn Limited | Construction | 2025 |
| Hillfield Construction Limited | Construction | 2011 |
| Hillier Lodge Residents Company Limited | Households | 1983 |
| Hillside Court(Kingston)Residents Association Limited | Households | 1970 |
| Hillsound Tuition and Repairs LLP | | 2023 |
| HIR Production and Distribution Ltd | Information & communication | 2014 |
| HIRO20 Studio Limited | Professional & scientific | 2024 |
| Hiwet Company Limited | Real estate | 2020 |
| HJ Architects Ltd | Professional & scientific | 2018 |
| HL Film and Entertainment Services Ltd | Information & communication | 2021 |
| HL Hampton Properties Ltd | Real estate | 2024 |
| HMO Living Ltd | Real estate | 2019 |
| Hodges Trading Company Limited | Professional & scientific | 2015 |
| Holland Court (Surbiton) Residents Association Limited | Households | 1971 |
| Hollingsworth Court (Surbiton) Residents Association Limited | Households | 1960 |
| Holmbury Court (Colliers Wood) Residents Association Limited | Households | 1971 |
| Home Artelier Limited | Wholesale & retail | 2024 |
| Home Artelier Real Estate Limited | Real estate | 2025 |
| Homulle & Hazen Property Investment Ltd | Real estate | 2013 |
| Hope Beach House Residents Association Limited | Households | 1999 |
| Horesk Property Limited | Real estate | 2015 |
| Hornbill Properties Ltd | Real estate | 2018 |
| Hoskinson Associates Limited | Administrative & support | 2010 |
| Hotel Mart Ltd | Wholesale & retail | 2020 |
| House Angels Services Ltd | Real estate | 2016 |
| Houztough Ltd | Real estate | 2019 |