| G.M. Services (UK) Limited | Professional & scientific | 2005 |
| Gabriel 22 Ltd | Information & communication | 2020 |
| Gacia Properties Limited | Real estate | 2001 |
| Gary Clague Plastering Ltd | Construction | 2003 |
| Gaynor Beach Limited | Other services | 2006 |
| Gedye & Sons (Solicitors) Limited | Professional & scientific | 2004 |
| George Romney Limited | Manufacturing | 1936 |
| Gibbons Properties Limited | Real estate | 2003 |
| Gilbert Gilkes & Gordon Limited | Manufacturing | 1921 |
| Gilgarran Estates Limited | Agriculture & fishing | 2006 |
| Gilkes Energy Limited | Professional & scientific | 1996 |
| Gilkes Pumping Systems Limited | Extraterritorial | 1998 |
| Gillam's Tearoom Limited | Hospitality | 2005 |
| Glaramara Properties (UK) Limited | Real estate | 1999 |
| Global Coffee Limited | Wholesale & retail | 2005 |
| Goadsbarrow Landscapes Limited | Wholesale & retail | 2007 |
| Goldstone Despatch Limited | Transport & logistics | 2003 |
| Golf Strike Limited | Information & communication | 2005 |
| Goole.Com Limited | Information & communication | 2003 |
| Gosforth Agricultural Society | Other services | 2017 |
| Gosforth Bakery Limited | Manufacturing | 2002 |
| GOT IT Covered Ltd | Wholesale & retail | 2007 |
| Graham Alderson Limited | Construction | 2002 |
| Grange Boutique Ltd | Hospitality | 2025 |
| Grange Cafe Limited | Hospitality | 2003 |
| Grange Flower Services Limited | Wholesale & retail | 2002 |
| Grant Gilmour Limited | Administrative & support | 2007 |
| Grasslot Fish and Chip Shop Limited | Hospitality | 2003 |
| Great Wall Moss Bay Ltd | Hospitality | 2024 |
| Green Road Off-Licence/Newsagents Ltd | Wholesale & retail | 2001 |
| Green's Global Trading Ltd | Professional & scientific | 1996 |
| Greenbank Farm (Cockermouth) Limited | Real estate | 2024 |
| Greenwood & Co (Carlisle) Limited | | 1959 |
| Greg Waters Limited | Construction | 2006 |
| Grisdale General Stores Limited | Wholesale & retail | 2003 |
| Grisdale Removals Limited | Transport & logistics | 2003 |
| Grosvenor House Papers Limited | Wholesale & retail | 1994 |
| Guild of OIL Firing Technicians Ltd. | Other services | 2003 |
| Gullwing Limited | Manufacturing | 1998 |
| GUY Perry Limited | Wholesale & retail | 1993 |
| H C Airey & Sons Limited | Wholesale & retail | 2003 |
| H Pigney & SON Limited | Manufacturing | 2002 |
| H S P Print & Design Limited | Manufacturing | 1990 |
| Hackney and Leigh Limited | Real estate | 2003 |
| Hale Garage Company Limited | Wholesale & retail | 2005 |
| Handy Concrete [Cumbria] Limited | Manufacturing | 2002 |
| Hannkey Limited | Hospitality | 2017 |
| Harmony Windows Ltd | Construction | 2004 |
| Hawkshead Brewery Limited | Manufacturing | 1996 |
| Hayclose Court Management Company Limited | Real estate | 1987 |
| Hayllar Farms | Agriculture & fishing | 2006 |
| Haywood Information Technology Ltd | Information & communication | 2002 |
| Hazkaz Limited | Extraterritorial | 2005 |
| Headlines (Ulverston) Limited | Other services | 2003 |
| Heathmoss Limited | Real estate | 1978 |
| Heaths Limited | Wholesale & retail | 2002 |
| Heathwaite MJB Limited | Professional & scientific | 2023 |
| Heaves Hotel Limited | Hospitality | 1947 |
| Helm Solutions Limited | Information & communication | 2004 |
| Hensingham Arlfc Limited | Arts & recreation | 2023 |
| Hensingham Arlfc Trading Limited | Hospitality | 2023 |
| Hewitt & Pritt Ltd | Construction | 2006 |
| HFT Gough & Co Limited | Professional & scientific | 2011 |
| High Grange Traditional Homes Limited | Construction | 2008 |
| Higham Learning Limited | Real estate | 2007 |
| Hilberry Designs Limited | Professional & scientific | 2007 |
| HILLCREST22 Limited | Hospitality | 2003 |
| Hills Books Limited | Wholesale & retail | 1979 |
| Hillthwaite House Hotel Limited | Hospitality | 2002 |
| HIX Leisure Limited | | 1996 |
| HMC Furniture Limited | Wholesale & retail | 2006 |
| Hollins Estates Limited | Real estate | 2000 |
| Holmen UK Limited | Manufacturing | 1979 |
| Home & Business Limited | Information & communication | 1990 |
| Home & Finance (General) Limited | Real estate | 1991 |
| Hot Mango Limited | Hospitality | 2004 |
| Howard Court Care Home Limited | Health & social care | 2004 |
| Hydracentre Limited | Manufacturing | 1987 |
| I & J Joinery Limited | Construction | 2006 |
| I.T. Shaw Limited | Construction | 1994 |
| IAN Cannon Limited | Construction | 2003 |
| IAN Collinson Limited | Construction | 2006 |
| IAN Davidson (Plant Hire) Limited | Extraterritorial | 2003 |
| IAN Ridley Transport Limited | Transport & logistics | 2002 |
| Ibis Organics Limited | Manufacturing | 2005 |
| Iceni Enterprises Ltd | Professional & scientific | 1997 |
| IHM Engineering Services Limited | Professional & scientific | 2007 |
| IMS Cumbria Limited | Wholesale & retail | 2003 |
| IN Touch Development Limited | Professional & scientific | 2005 |
| In-One Technology Ltd | Information & communication | 1996 |
| Inca Construction Limited | Construction | 2001 |
| Inventory Platform Ltd | Arts & recreation | 2019 |
| Irvings Butchers Limited | Wholesale & retail | 2003 |
| Isaac Braithwaite Installations Limited | Manufacturing | 1994 |
| Islerange Limited | Financial services | 1989 |
| Itonfield | Administrative & support | 2007 |
| J & H Bland & SON | Agriculture & fishing | 2006 |
| J & P Routledge & SON Limited | Agriculture & fishing | 2006 |
| J Mcavoy & SON Limited | Agriculture & fishing | 2003 |
| J R Hind Limited | Administrative & support | 2003 |