| Hills Holdings Retail Limited | Real estate | 2019 |
| Hillside Court (Dartmouth) Management Limited | Households | 1993 |
| Hillside Properties (Weston) Limited | Households | 2025 |
| Hinwood’S Auto Services Ltd | Wholesale & retail | 2022 |
| HIRE365 Ltd | Administrative & support | 2015 |
| HJ Chef & Eatery Services Ltd. | Hospitality | 2024 |
| Hjtt Ltd | Professional & scientific | 2019 |
| HL Media Productions Ltd | Information & communication | 2022 |
| HM Car Hire Limited | Administrative & support | 2026 |
| HM Coldrooms Ltd | Construction | 2026 |
| HMH Consultancy Services Ltd | Construction | 2018 |
| HO HO NA Ltd | Hospitality | 2024 |
| Hobbs & Webb Limited | Real estate | 2011 |
| Hobbs Property Holding Ltd | Real estate | 2025 |
| Hobden Hisec Ltd | Administrative & support | 2015 |
| Hodges Family Limited | Real estate | 2022 |
| Holden Smith Estates Ltd | Construction | 2026 |
| Holland and Milton Court Management Company Ltd. | Households | 2002 |
| Holland House (Maintenance) Limited | Households | 1962 |
| Hollings Holdings & Real Estate Ltd | Real estate | 2022 |
| Hollow Hill Homes Ltd | Real estate | 2025 |
| Hollywood Enterprises West Coast Limited | Other services | 2015 |
| Holm Grange (WSM) Management Company Limited | Households | 2005 |
| Holmer Mansions Management Limited | Households | 1988 |
| Holmes and Moore Ltd | Real estate | 2024 |
| Home & Office Storage Company Ltd | Transport & logistics | 2003 |
| Home-Start North Somerset | Health & social care | 2005 |
| Homecare North Somerset Ltd | Health & social care | 2019 |
| Homefirst Pathways Housing Ltd | Hospitality | 2026 |
| Homehaven Property Investments Ltd | Construction | 2025 |
| Homely Meals Ltd | Hospitality | 2024 |
| Homie Needs UK Limited | Wholesale & retail | 2025 |
| Honeybee BEE Cafe House Ltd | Hospitality | 2025 |
| Honeyhall Limited | Real estate | 2020 |
| Honeymede Properties Limited | Real estate | 2026 |
| Hood and Norville Limited | Construction | 1965 |
| Hood Ventures Ltd | Arts & recreation | 2017 |
| Hope Wellbeing Yoga Limited | Other services | 2025 |
| Horizon Business Shield Ltd | Professional & scientific | 2025 |
| Horizon Business Solutions Limited | Other services | 1998 |
| Horizon CMB Enterprises Ltd | Wholesale & retail | 2023 |
| Horsepower Stables Ltd | Transport & logistics | 2023 |
| Host 2 Limited | Hospitality | 2015 |
| Host FM Limited | Extraterritorial | 2020 |
| Host Hospitality Management Limited | Extraterritorial | 2020 |
| Host RHM Limited | Hospitality | 2020 |
| Host Somerset | Hospitality | 2014 |
| Host Suffolk Limited | Hospitality | 2020 |
| Hot COD Productions Limited | Information & communication | 2009 |
| Hot Patootie TV Limited | Information & communication | 2007 |
| House Martin Rentals Ltd | Real estate | 2020 |
| House of Kustoms Limited | Other services | 2020 |
| Howard Garages Group Limited | Professional & scientific | 2018 |
| Howard Goodman Funeral Home Ltd | Other services | 2013 |
| Howe Builders Ltd | Construction | 2018 |
| Howlett&Co Window Cleaning Ltd | Administrative & support | 2024 |
| HRK Trading Ltd | Wholesale & retail | 2026 |
| Huang's Brother Ltd | Hospitality | 2022 |
| Hub Weston CIC | Hospitality | 2017 |
| Huge Boss Ltd | Extraterritorial | 2011 |
| Humans of Weston CIC | Education | 2021 |
| Hungry and Wise PVT Ltd | Transport & logistics | 2024 |
| Hungry Hub Caterers Ltd | Hospitality | 2024 |
| Hurman King Limited | Hospitality | 2008 |
| Hutton Moor Court (W-S-M) Management Company Limited | Households | 1990 |
| Huttons Limited | Wholesale & retail | 1990 |
| Huzefa Foods Limited | Hospitality | 2024 |
| HV Electrical & Civil Limited | Professional & scientific | 2023 |
| Hyacinth Kreimeyer Ltd | Health & social care | 2007 |
| Hybrid Fitness WSM Limited | Arts & recreation | 2025 |
| Hygienicair Ltd | Construction | 2010 |
| Hyronb Limited | Professional & scientific | 2024 |
| Hythe Wood Management Company Limited | Households | 2011 |
| Hyōkō (UK) Ltd | Manufacturing | 2023 |
| I AM Spinks Limited | Arts & recreation | 2019 |
| I O a Healthcare Ltd | Health & social care | 2018 |
| I.Q. Solutions (G.B.) Limited | Construction | 2012 |
| Iain Mortimer Design Ltd | Professional & scientific | 2023 |
| Iain Stirling Ltd | Arts & recreation | 2011 |
| IAK Developments Ltd | Real estate | 2013 |
| IAN Dance Services Limited | Construction | 2009 |
| Ibuild Igrow Ltd | Financial services | 2026 |
| Ibuy Irent Ltd | Real estate | 2025 |
| IC Joinery Limited | Construction | 2018 |
| Iceberg Technology Ltd | Administrative & support | 2011 |
| Icris Managed IT Services Ltd | Information & communication | 2018 |
| Iemt Limited | Manufacturing | 2012 |
| IEW Ltd | Arts & recreation | 2025 |
| IG Associates Ltd | Professional & scientific | 2017 |
| IGL Procurement Ltd | Information & communication | 2015 |
| Igloo Interiors Ltd | Construction | 2025 |
| Ignite Conveyor Oven Specialists Limited | Manufacturing | 2018 |
| IK90 Ltd | Transport & logistics | 2019 |
| Ikenga Ltd | Health & social care | 2024 |
| IKR2RPROPERTY Ltd | Real estate | 2024 |
| ILC Forensics Ltd | Professional & scientific | 2018 |
| Iles and Jenkin Limited | Real estate | 2006 |
| Ilmac Ltd | Information & communication | 2005 |
| IM Cleaning Limited | Administrative & support | 2023 |
| Image Coach Works Ltd | Wholesale & retail | 2023 |