| Hummus Limited | Financial services | 2015 |
| Hunkemoller UK Ltd | Administrative & support | 2011 |
| Hunt a Car Limited | Wholesale & retail | 2002 |
| Hunt-Reeves Prestige Worldwide Ltd | Hospitality | 2022 |
| Hunter Roofing (Worcester) Limited | Construction | 2011 |
| Hurley Fencing Limited | Agriculture & fishing | 1965 |
| Hurley Systems Limited | Professional & scientific | 2008 |
| Husaria Ltd | Wholesale & retail | 2018 |
| Huski Property Development Limited | Extraterritorial | 2020 |
| Hussingtree Blends Limited | Manufacturing | 2017 |
| Hussingtree Houses Ltd | Real estate | 2025 |
| Hussl Ltd | Information & communication | 2024 |
| Hutch Home Improvements Ltd | Administrative & support | 2025 |
| Huuman Kind Care Ltd | Health & social care | 2020 |
| Huxley and Mansfield Limited | Wholesale & retail | 2018 |
| Hvaciq Limited | Energy | 2023 |
| HWG Engineering Ltd | Professional & scientific | 2023 |
| HWT Projects Limited | Professional & scientific | 2022 |
| HY Eco Ltd | Construction | 2022 |
| Hy-Clean Supplies Limited | Wholesale & retail | 2010 |
| Hydra Resources Ltd | Other services | 2024 |
| Hydrated Nails Ltd | Manufacturing | 2022 |
| Hyett's Garage Ltd | Wholesale & retail | 2020 |
| Hyett's Quality Used Vehicles Ltd | Wholesale & retail | 2020 |
| Hygenitec Disposables Limited | Transport & logistics | 2007 |
| Hygiene Resources Holdings Limited | Financial services | 2024 |
| Hygiene Resources Limited | Administrative & support | 2016 |
| Hylton Road Garage Limited | Wholesale & retail | 2025 |
| Hypeaks Property Limited | Real estate | 2022 |
| Hyve by Prime Limited | Real estate | 2022 |
| Hyve Lifecycle Management Co Limited | Real estate | 2022 |
| Hyve Operations Limited | Real estate | 2022 |
| I & E Plumbing Limited | Extraterritorial | 2025 |
| I & P Finishing Limited | Manufacturing | 2001 |
| I Design & Build Ltd | Wholesale & retail | 2007 |
| I DO Accounts Ltd | Professional & scientific | 2020 |
| I DO Payroll Ltd | Professional & scientific | 2026 |
| I Love Artisan Markets Ltd | Extraterritorial | 2003 |
| I Love Markets Ltd | Extraterritorial | 2005 |
| I M Thomson Associates Limited | Other services | 2006 |
| I P N T M Ltd | Professional & scientific | 2000 |
| I Street Plumbing & Heating Ltd | Other services | 2015 |
| I&E Estates Limited | Real estate | 2021 |
| I-Sing Choirs Ltd | Arts & recreation | 2021 |
| I-Wh Newco 1 Limited | Information & communication | 2017 |
| I.B.R Group Limited | Administrative & support | 2023 |
| IA Impact Consulting Ltd | Professional & scientific | 2022 |
| Iabm | Other services | 2004 |
| Iabm Investments Limited | Other services | 1999 |
| Iaconis Services Limited | Wholesale & retail | 2024 |
| IAN Gordon Ltd | Health & social care | 2023 |
| IAN Green Rigger Driving Services Limited | Information & communication | 2016 |
| IAN Pollitt Ltd | Professional & scientific | 2016 |
| IAN Teacher Translations Limited | Information & communication | 2017 |
| Iasis Tech Logistics Limited | Transport & logistics | 2017 |
| Iasis Tech UK Ltd | Financial services | 2020 |
| Iasis Technologies UK Limited | Administrative & support | 2002 |
| Iboxfitness Ltd | Extraterritorial | 2012 |
| Iceworks Developments (Worcester) Limited | Construction | 2014 |
| ICG Installation & Commissioning Services Limited | Manufacturing | 2013 |
| Icybao Ltd | Hospitality | 2018 |
| IDC Trans Ltd | Transport & logistics | 2016 |
| Ideal Improvements South West Ltd | Construction | 2013 |
| Idealirrigation Ltd | Administrative & support | 2025 |
| Idest Worldwide Limited | Professional & scientific | 2025 |
| IDR Consultants Limited | Professional & scientific | 2015 |
| Ietia Limited | Other services | 1995 |
| Ifly Indoor Skydiving Ltd | Arts & recreation | 2002 |
| IFY Limited | Wholesale & retail | 2022 |
| IGH Maintenance & Solutions Limited | Construction | 2021 |
| Igloo 2020 Ltd | Construction | 2021 |
| Igloo Projects Limited | Construction | 2018 |
| Iglu Associates Limited | Professional & scientific | 2019 |
| IGM Group WR Ltd | Wholesale & retail | 2026 |
| Ihsaan Hussain Medical Limited | Health & social care | 2015 |
| IJD Engineering Limited | Financial services | 2020 |
| IJF Body Repair Centre Limited | Wholesale & retail | 1999 |
| Iklean-Group Services Ltd | Administrative & support | 2024 |
| Ikon Bars Ltd | Hospitality | 2019 |
| Ikon Telecom Ltd | Information & communication | 2013 |
| ILD Services Limited | Professional & scientific | 2017 |
| Ildab Ltd | Administrative & support | 2024 |
| Illuminate Skills Ltd | Information & communication | 2023 |
| IM Solutions (GB) Limited | Professional & scientific | 2012 |
| IM24 Limited | Financial services | 2015 |
| Image ID Ltd | Professional & scientific | 2021 |
| Imaginify Ltd | Information & communication | 2017 |
| IMJ Property Limited | Construction | 2025 |
| Immersive Dining Concepts Limited | Financial services | 2024 |
| Immersive Relief Limited | Health & social care | 2019 |
| Immerzze Ltd | Administrative & support | 2022 |
| Impact Energy Solutions Limited | Extraterritorial | 2025 |
| Impartial HR Limited | Professional & scientific | 2019 |
| Imperial Diamond Healthcare Ltd | Administrative & support | 2024 |
| Imperial Painting & Decorating Midlands Ltd | Construction | 2022 |
| Impey Performance Ltd | Other services | 2020 |
| Impression Club Limited | Administrative & support | 2021 |
| Improvision Cares Ltd | Other services | 2025 |
| IMS a Trading Ltd | Construction | 2025 |
| IN 'N' OUT Trading Ltd | Wholesale & retail | 2023 |