| Greenwood Forest Park Limited | Arts & recreation | 2003 |
| Greeny Shiny Cleaning Services Ltd | Administrative & support | 2024 |
| Greenyield Properties Limited | Real estate | 2018 |
| Greetings of Haxby Limited | Wholesale & retail | 2012 |
| Greetwell Fields (Lincoln) Residents Management Company Limited | Real estate | 2019 |
| Greg Logistics Ltd | Transport & logistics | 2015 |
| Greg's York Letting Ltd | Real estate | 2025 |
| Gregson Builders Ltd | Construction | 2013 |
| Gregson Consulting Limited | Professional & scientific | 2016 |
| Grendahl Investment Limited | Professional & scientific | 1987 |
| Grey Automotive Ltd | Wholesale & retail | 2022 |
| Grey FOX Thinking Limited | Professional & scientific | 2023 |
| Grey Pebbles Ltd | Professional & scientific | 2018 |
| Grey Properties Limited | Real estate | 2014 |
| Greybadger Media Limited | Information & communication | 2008 |
| Greymark Research Ltd | Information & communication | 2025 |
| Greysham LLP | | 2022 |
| Grice Electrical Ltd | Construction | 2022 |
| Grid and Grain Architects Ltd | Professional & scientific | 2024 |
| Griffin Wharf (Ipswich) Residents Management Company Limited | Households | 2020 |
| Griffpatch Ltd | Information & communication | 2022 |
| Grimbald Management Company Limited | Real estate | 2006 |
| Grimston Barns Management Company Limited | Households | 2004 |
| Grimston Escapes Ltd | Hospitality | 2020 |
| Grimston Landscapes Limited | Wholesale & retail | 2003 |
| Grimston Management Limited | Financial services | 2017 |
| Grinham & Fairclough Joiners Limited | Construction | 2008 |
| Gripcure Limited | Other services | 2021 |
| Grizzly Woof Ltd | Hospitality | 2024 |
| GRJ (Transport) Limited | Transport & logistics | 1999 |
| Groove Records Limited | Wholesale & retail | 2021 |
| Groovy MOO Commercial Limited | Manufacturing | 2025 |
| Grosvenor Lettings Limited | Real estate | 2021 |
| Grosvenor Park (York) Management Company Limited | Households | 2002 |
| Grosvenor Terrace Management Company Limited | Households | 2001 |
| Grosvenor Wealth Ltd | Financial services | 2015 |
| Grotta Limited | Real estate | 2019 |
| Ground Source Engineering Limited | Professional & scientific | 2022 |
| Grounded Human Resources Ltd | Administrative & support | 2021 |
| Groundserv (Yorkshire) Ltd | Administrative & support | 2023 |
| Groundzone Residents Management Limited | Administrative & support | 1988 |
| Group-Cbt Community Interest Company | Education | 2023 |
| Groupby UK Ltd | Information & communication | 2018 |
| Grove Park Finance Ltd | Professional & scientific | 2006 |
| Grove Street (Raunds) Residents Management Company Limited | Households | 2014 |
| Groveley Health Limited | Health & social care | 2020 |
| Grow Beyond Group Ltd. | Financial services | 2023 |
| Grow Wild York CIC | Agriculture & fishing | 2022 |
| Growth Diagnostics Ltd | Extraterritorial | 2025 |
| Growth Partner AI LLP | | 2024 |
| Growth Partner II LLP | | 2023 |
| Growth Partner III LLP | | 2024 |
| Growth Partner IV LLP | | 2025 |
| Growth Partner LLP | | 2015 |
| Growth Partner Management LLP | | 2023 |
| Growth Partner Ventures Limited | Financial services | 2024 |
| Growth Spurt Ltd | Administrative & support | 2025 |
| Growthbox Consulting Limited | Professional & scientific | 2021 |
| Growthbox Ltd | Professional & scientific | 2015 |
| Growtropicals Ltd | Agriculture & fishing | 2020 |
| Grumpy Moose Ltd | Education | 2014 |
| Grunta Holdings Limited | Extraterritorial | 1978 |
| Grunta Limited | Agriculture & fishing | 1972 |
| GS Property Limited | Construction | 2008 |
| GS Rugby Tech./Skills Ltd | Arts & recreation | 2012 |
| Gsai Limited | Wholesale & retail | 2014 |
| GSI (York) Ltd | Professional & scientific | 2014 |
| Gsir Ltd | Real estate | 2021 |
| Gsjt Consultancy Ltd | Professional & scientific | 2019 |
| GSM Flooring Limited | Construction | 2011 |
| GSM Yorkshire Ltd | Construction | 2023 |
| GSW Properties Limited | Real estate | 2015 |
| GT Business Services Limited | Professional & scientific | 2020 |
| GT Graphics Limited | Manufacturing | 2003 |
| Gtdp Limited | Information & communication | 2021 |
| Gtfo Bars Limited | Hospitality | 2022 |
| GTL Land Management Ltd | Real estate | 2025 |
| GTS Projects & Consultancy Ltd | Professional & scientific | 2024 |
| Guadalabon Limited | Professional & scientific | 2024 |
| Guaranteed Property Holdings Ltd | Real estate | 2026 |
| Guaranteed Tiling Ltd | Construction | 2023 |
| Guardian Angel Fitness Limited | Health & social care | 2002 |
| Guardian Angel Fitness Therapies Limited | Education | 2013 |
| Guardian Clinical Ltd | Health & social care | 2025 |
| Guardian Property Lettings Limited | Real estate | 2002 |
| Guardian Property Protection Ltd. | Households | 2012 |
| Guest Relations Management Ltd | Administrative & support | 2020 |
| Guest Walker EOT Limited | Financial services | 2025 |
| Guest Walker Limited | Professional & scientific | 2015 |
| Guggle and Torquith Ltd | Manufacturing | 2019 |
| Guided Rail Limited | Professional & scientific | 2020 |
| Guldmann Limited | Health & social care | 2018 |
| Gumption Marketing Limited | Professional & scientific | 2020 |
| Gunboat Media Ltd | Information & communication | 2010 |
| Gunn Contractors Ltd | Construction | 2025 |
| Gutter VAC Ltd | Construction | 2025 |
| GUY & Miller Limited | Professional & scientific | 1977 |
| GUY Mowbray Limited | Other services | 2015 |
| GW Brands Direct Limited | Wholesale & retail | 2020 |
| GW Financial Management Ltd | Financial services | 2012 |