| G J Evans Group Holdings Ltd | Financial services | 2020 |
| G-Mynx Ltd | Wholesale & retail | 2018 |
| G.L. Campbell Builders Limited | Construction | 1999 |
| Galloway Chase Management Company Limited | Households | 1997 |
| Garage Equipment Specialists Limited | Manufacturing | 2022 |
| Garibaldi PUB Co Hedsor Limited | Hospitality | 2012 |
| Garvey Management Limited | Households | 1990 |
| Gauge Software Limited | Information & communication | 2024 |
| Gaze Hill Management Limited | Households | 2005 |
| Gazeview Limited | Households | 1989 |
| Gcdinvestments Ltd | Real estate | 2022 |
| GDM Creative Ltd | Professional & scientific | 2024 |
| Geeza Engineering Limited | Professional & scientific | 2015 |
| Georgian Heights Management Limited | Households | 2002 |
| GET Gelly Ltd | Wholesale & retail | 2024 |
| GET on the Web Limited | Information & communication | 1998 |
| Gimme Marketplace Ltd | Wholesale & retail | 2025 |
| Gladstone Rise (Block H) Management Company Limited | Households | 1989 |
| Glanmor Management Company Limited | Households | 2002 |
| Glinton Slade Limited | Real estate | 1975 |
| Global CEO Alliance (UK) Limited | Other services | 2017 |
| Global Data Systems Limited | Financial services | 2012 |
| Global Facades Limited | Construction | 2023 |
| Glowise Limited | Wholesale & retail | 2019 |
| Golden Hour Clothing Ltd | Wholesale & retail | 2025 |
| Golding Consulting Limited | Professional & scientific | 2024 |
| Gower Property Management Limited | Households | 2004 |
| GPG Design and Build Ltd | Construction | 2024 |
| Grade Properties Limited | Real estate | 2018 |
| Graphic Arts Supplies Bourne END Limited | Wholesale & retail | 1978 |
| Grassingham END Management Company (Chalfont ST Peter) Limited | Households | 2007 |
| Gray Plumbing & Interiors Limited | Construction | 2005 |
| Greater London Lieutenancy Ltd | Public administration | 2013 |
| Green Crystal Limited | Health & social care | 2019 |
| Green Dream Properties Ltd | Hospitality | 2021 |
| Green Lawns Management Company Limited | Households | 1996 |
| Greenheys Devco Ltd | Construction | 2025 |
| Greenlife Properties (Residential) Limited | Real estate | 2013 |
| Greenlife Properties Limited | Real estate | 1991 |
| Greenpest Ltd | Administrative & support | 2022 |
| Greensidehouse Ltd | Real estate | 2018 |
| Grenville Court Management Company Limited | Households | 1987 |
| Greystoke Projects Ltd | Professional & scientific | 2015 |
| Greystoke Property Group Ltd | Financial services | 2024 |
| Greystoke Property Holdings (Clarendon) Ltd | Real estate | 2023 |
| Greystoke Property Holdings (Freeholds) Ltd | Real estate | 2023 |
| Greystoke Property Holdings Limited | Real estate | 2016 |
| Greystoke Residential Limited | Real estate | 2016 |
| Grove Lane (Camberwell) Management Company Limited | Households | 2014 |
| GSM Connect Limited | Wholesale & retail | 2011 |
| GT Davidson Property Ltd | Real estate | 2026 |
| H&L Construction Solutions Limited | Construction | 2010 |
| HAC Innovations Limited | Construction | 2013 |
| Halo Track AI Ltd | Information & communication | 2026 |
| Hampshire Building Equipment Ltd | Construction | 2019 |
| Harbour Lights Management Company Limited | Households | 1977 |
| Harbour Walk 2005 Management Company Limited | Extraterritorial | 2005 |
| Hardings ROW Management Company Limited | Real estate | 2001 |
| Harraby Green Maintenance Company (2008) Limited | Households | 2008 |
| Harris Hale Ltd | Hospitality | 2024 |
| Hartjay Scaffolding Limited | Construction | 2007 |
| Haycroft Redlands Lane (Crondall) Management Company Limited | Households | 2021 |
| Haystacks Consulting Limited | Professional & scientific | 2009 |
| Hazelwood House Management Company Limited | Households | 2000 |
| Headingley Castle Management Limited | Households | 2003 |
| Heatherfield Place Management Company Ltd | Real estate | 2019 |
| Heatherlands III Management (Number 1) Limited | Households | 1987 |
| Heckenast & Co Limited | Administrative & support | 2004 |
| Hedsor Associates Limited | Wholesale & retail | 2008 |
| Help Resourcing Limited | Administrative & support | 2012 |
| Henwood Place Management Limited | Extraterritorial | 2010 |
| Heron Gardens (Redhill) Residents Management Company Limited | Households | 2016 |
| HF Social Work Limited | Health & social care | 2014 |
| Hi-Potential Limited | Professional & scientific | 2012 |
| High Peak (Sunningdale) Management Company Limited | Households | 2016 |
| Highfields (Loudwater) Management Company Limited | Households | 2007 |
| Hinsley Logistics Ltd | Transport & logistics | 2020 |
| Hinxton Road Management Company Limited | Households | 2002 |
| Hivve Group Ltd | Information & communication | 2017 |
| Hivve Ltd | Information & communication | 2009 |
| HJ Accounting Limited | Professional & scientific | 2012 |
| Holborn Central Management Company Limited | Households | 2004 |
| Hollybank (Bourne END) Management Company Limited | Households | 2021 |
| Holmdale Flat Management Limited | Households | 1981 |
| Holmedale Residents Association (NO. 1) Limited | Households | 1977 |
| Holmedale Residents Association (NO. 2) Limited | Households | 1978 |
| Hologlaze Ltd | Manufacturing | 2025 |
| Home Counties Roofers Ltd | Construction | 2004 |
| HOME2HOME Property Staging Ltd | Other services | 2023 |
| Homegrown Group Limited | Information & communication | 2015 |
| Homegrown SPV 107 Ltd | Financial services | 2017 |
| Honey Butter Ltd | Hospitality | 2024 |
| Hooded Gaming Ltd | Other services | 2014 |
| Horfield (Linden Heights) Management Company Limited | Households | 2003 |
| Horn Lane Metals Ltd | Wholesale & retail | 2015 |
| Horrus Holdings Ltd | Financial services | 2024 |
| Hotmode Computers Limited | Professional & scientific | 1997 |
| Houltons Park Management Limited | Households | 2010 |
| Houseshaw Limited | Real estate | 2015 |
| Howvin Limited | Information & communication | 2015 |