| Grendan Limited | Professional & scientific | 2004 |
| Grewal Project Limited | Manufacturing | 2020 |
| Greybridge Search & Selection Ltd | Administrative & support | 2012 |
| Greyling-James Ltd | Households | 2021 |
| Greymoore Developments Limited | Arts & recreation | 2016 |
| Greysky Industries Limited | Other services | 2012 |
| Griffin Management Solutions Limited | Extraterritorial | 2010 |
| Griffiths Family Holdings Ltd | Real estate | 2021 |
| Griffiths Financial Planning Limited | Financial services | 1999 |
| Griffiths&Co Ltd | Hospitality | 2026 |
| Grima Properties Limited | Real estate | 2019 |
| Grime Reaper Holdings Ltd | Financial services | 2023 |
| Grip Sports Management Limited | Arts & recreation | 2021 |
| Grosvenor Court (Leamington) Management Company Limited | Households | 1969 |
| Groundforce Projects Limited | Construction | 2017 |
| Groundmark Limited | Administrative & support | 2008 |
| Groundwater Dynamics Ltd | Water & waste | 2012 |
| Groundworks & Civils Limited | Extraterritorial | 2021 |
| Groupable Limited | Professional & scientific | 2016 |
| Grove Court (Leamington Spa)Management Company Limited | Households | 1973 |
| Grove Electrical Controls Limited | Professional & scientific | 2017 |
| Grover Property Management Limited | Real estate | 2013 |
| Grow Your Own Records Limited | Wholesale & retail | 2023 |
| Growth by Trust Ltd | Professional & scientific | 2024 |
| GROWTH101 Ltd | Professional & scientific | 2024 |
| GRS Recovery Warwickshire Ltd | Transport & logistics | 2018 |
| GS Dental and Aesthetics Limited | Health & social care | 2023 |
| GS Gill Limited | Information & communication | 2018 |
| GSD Carriers Ltd | Transport & logistics | 2025 |
| GSD Commercial Ltd | Real estate | 2018 |
| GSK Contracting Ltd | Construction | 2017 |
| GSK Cross Street Ltd | Households | 2023 |
| GSK Development Solutions Ltd | Construction | 2015 |
| GSK Montgomery Ltd | Construction | 2024 |
| GSM (Leamington Spa) Limited | Construction | 2004 |
| GTA29 Ltd | Manufacturing | 2018 |
| Gtech Automotive Ltd | Wholesale & retail | 2026 |
| Gtsa Consulting Limited | Professional & scientific | 2019 |
| Guapa Bar Ltd | Hospitality | 2025 |
| Gulati Designs Limited | Professional & scientific | 2008 |
| Gurj Houses 2 Ltd | Real estate | 2025 |
| Guru Kirpa Property Ltd | Real estate | 2026 |
| Guten Tagg Ltd | Construction | 2016 |
| Guy's Gift | Health & social care | 2008 |
| Guys Cliffe Management Company Limited | Households | 1979 |
| GW Fals Ltd | Hospitality | 2023 |
| Gym Girl Ltd | Arts & recreation | 2019 |
| Gym Service Solutions Limited | Other services | 2011 |
| H Iconic Clothing Ltd | Wholesale & retail | 2021 |
| H Sandhar Ltd | Wholesale & retail | 2025 |
| H&G Beauty Bar Limited | Other services | 2024 |
| H&M Family Holding Limited | Financial services | 2026 |
| H-Tech IT Support Limited | Information & communication | 2017 |
| H. Jordan Brickworks Ltd | Construction | 2016 |
| H.O.M.E West Midlands Ltd | Real estate | 2024 |
| H.V.A.C. Mech Services Ltd | Construction | 2024 |
| H2CITY Ltd | Real estate | 2026 |
| H3 Live Ltd | Administrative & support | 2024 |
| HA Associates Limited | Administrative & support | 2013 |
| HAB Roofing Ltd | Construction | 2020 |
| Haberdashery & Fabric Hub Ltd | Other services | 2024 |
| Habitual Healthcare Limited | Information & communication | 2024 |
| HAC (London) Limited | Extraterritorial | 2025 |
| HAC (Warwickshire) Limited | Health & social care | 2009 |
| Haddie & Trilby Limited | Wholesale & retail | 2013 |
| Hague Heating Limited | Construction | 2017 |
| Hahn-Flynn Group Limited | Administrative & support | 2025 |
| Haiku M.Lo Ltd | Professional & scientific | 2014 |
| Hair and Scalp Solutions Limited | Other services | 2022 |
| Hair by Becky Limited | Other services | 2020 |
| Halcyon Beauty Limited | Arts & recreation | 1999 |
| Halfpipe Holdings Limited | Financial services | 2022 |
| Hall & Quinn Ltd | Construction | 2024 |
| Hallstile Consultancy Ltd | Administrative & support | 2025 |
| Halo Electrical Ltd | Construction | 2020 |
| Halo FX Limited | Arts & recreation | 2011 |
| Halo Medical Solutions Limited | Professional & scientific | 2019 |
| HAM Management Limited | Professional & scientific | 2024 |
| Hama Salon Ltd | Other services | 2025 |
| Hamarlab Ltd | Information & communication | 2013 |
| Hancock Homestays Ltd | Manufacturing | 2025 |
| Hancox Equestrian Limited | Manufacturing | 2003 |
| Hancox Management Solutions Ltd | Information & communication | 2007 |
| Handford Property Holdings Ltd | Extraterritorial | 2022 |
| Handles Property Ltd | Real estate | 2016 |
| HANDYGOODS4HOME Ltd | Wholesale & retail | 2022 |
| Hann's Automotives Ltd | Wholesale & retail | 2026 |
| Hanover Real Estate Limited | Real estate | 2011 |
| Happitude Limited | Health & social care | 2018 |
| Happitude.Life Limited | Health & social care | 2018 |
| Happy Feet Childminding Limited | Health & social care | 2025 |
| Happy Sophia Ltd | Wholesale & retail | 2019 |
| Harbury E-Wheels | Transport & logistics | 2019 |
| Harbury Fields Dog Walking Fields Ltd | Arts & recreation | 2023 |
| Harbury Future Energy C.I.C. | Other services | 2023 |
| Harbury Pharmacy Limited | Wholesale & retail | 2012 |
| Harding Managed Services Ltd | Professional & scientific | 2025 |
| Hardy Manor Ltd | Real estate | 2026 |
| Harley Moon Limited | Extraterritorial | 2012 |
| Harmer-Peake Ltd | Other services | 2025 |