| Green Heart Carers Ltd | Administrative & support | 2022 |
| Green House Project Control Ltd | Information & communication | 2023 |
| Green Leaf Marketing Limited | Professional & scientific | 2002 |
| Green Mind Promotions Ltd. | Arts & recreation | 2019 |
| Green Nature Ltd | Administrative & support | 2010 |
| Green Oak Solar Frames Ltd | Manufacturing | 2024 |
| Green Ocean Consultancy Ltd | Professional & scientific | 2025 |
| Green Ocean Heritage Ltd | Wholesale & retail | 2025 |
| Green Room Brands Consulting Ltd | Professional & scientific | 2022 |
| Green Scale Limited | Professional & scientific | 2023 |
| Green Triangle Business Generation Limited | Administrative & support | 2013 |
| Green Turn Ltd | Wholesale & retail | 2024 |
| Greenbolt Networks Ltd | Information & communication | 2024 |
| Greencurrent Power Engineering Limited | Professional & scientific | 2022 |
| Greene & Greene Trustees Limited | Administrative & support | 2022 |
| Greene & Greene Trustees Two Limited | Administrative & support | 2022 |
| Greene Mews Management Company Limited | Households | 2016 |
| Greeneverywhere Ltd | Information & communication | 2012 |
| Greengage Bookkeeping LLP | | 2013 |
| Greenhaven Ecology Centre CIC | Agriculture & fishing | 2019 |
| Greenhouse Foods Ltd | Hospitality | 2025 |
| Greenleaf Processing Limited | Manufacturing | 2018 |
| Greenlyndlynd Ltd | Wholesale & retail | 2025 |
| Greenshoot Cleaning & Premises Services Ltd | Administrative & support | 2023 |
| Greenspring Housing Ltd | Real estate | 2025 |
| Greenstar Plumbing & Heating Ltd | Construction | 2017 |
| Greenview Consulting Ltd | Professional & scientific | 2022 |
| Greenwave Renewable Solutions Ltd | Construction | 2023 |
| Greenworld Retail Ltd | Wholesale & retail | 2012 |
| Greg M S Jones Holdings Limited | Financial services | 2025 |
| Greg M S Jones Limited | Other services | 2022 |
| Gremlin on the Screen Ltd | Information & communication | 2025 |
| Greta Grove House Limited | Households | 1996 |
| Grevison Ltd | Real estate | 2020 |
| GRG Consultants Limited | Health & social care | 2015 |
| Gridframe Hardware Ltd | Wholesale & retail | 2026 |
| Gridworld Holdings Ltd | Information & communication | 2026 |
| Griffin Fencing Ltd | Construction | 2024 |
| Grigg Holdings Limited | Financial services | 2016 |
| Grigio Accounting Services Ltd | Professional & scientific | 2022 |
| Grime to Lime Ltd | Construction | 2021 |
| Grimm Sanctum Ltd | Wholesale & retail | 2026 |
| Gritsia Group Ltd | Financial services | 2026 |
| Grittydigital Ltd | Information & communication | 2025 |
| Grobotic Labs Limited | Professional & scientific | 2024 |
| Grocery Lens Ltd | Information & communication | 2025 |
| Groe Ltd | Manufacturing | 2019 |
| Grogan’S Credit Consulting Ltd | Professional & scientific | 2025 |
| Groovingly Ltd | Information & communication | 2026 |
| Ground Loop CIC | Education | 2026 |
| Grounded Building Products SIF Ltd | Wholesale & retail | 2025 |
| Grounded ESG Ltd | Professional & scientific | 2025 |
| Grounded Finance Ltd | Financial services | 2026 |
| Grounded Innovation Ltd | Professional & scientific | 2009 |
| Grounded Manchester CIC | Hospitality | 2021 |
| Grounded MCR Limited | Wholesale & retail | 2021 |
| Grounded Rituals Limited | Manufacturing | 2025 |
| Group 4 Enterprise Limited | Hospitality | 2019 |
| Group Care Recruitment Ltd | Health & social care | 2024 |
| Groupe Business Thérapie Ltd | Wholesale & retail | 2019 |
| Grovewood Ventures Ltd | Administrative & support | 2011 |
| Grow Consulting Group Ltd | Information & communication | 2022 |
| Grow in Emea Ltd | Wholesale & retail | 2023 |
| Grow My Wellbeing Ltd | Agriculture & fishing | 2021 |
| Grow Services Ltd | Information & communication | 2024 |
| Growbee Ltd | Information & communication | 2024 |
| Growbuild Ltd | Construction | 2019 |
| Growing Results Limited | Information & communication | 2012 |
| Growspark AI Ltd | Information & communication | 2025 |
| Growth in Grace Ltd | Professional & scientific | 2026 |
| Growthbrite Limited | Information & communication | 2017 |
| Growup Digi Services Ltd | Wholesale & retail | 2019 |
| Grune LLP | | 2026 |
| Gruner Intelligence Ltd | Information & communication | 2026 |
| Gryphen Ltd | Professional & scientific | 2019 |
| GS Retail Group Limited | Wholesale & retail | 2018 |
| Gs-Rimex UK Limited | Administrative & support | 2023 |
| GSH Capital Limited | Real estate | 2021 |
| Gshk Ltd | Real estate | 2022 |
| GSI Investment Limited | Real estate | 2019 |
| GSJ Property Holdings LLP | | 2020 |
| GSS Protections Ltd | Information & communication | 2022 |
| GT (Signs and Services) Ltd | Other services | 2021 |
| GT Metrics Ltd | Information & communication | 2026 |
| GTC Pipelines Limited | Transport & logistics | 1995 |
| GTC Utility Construction Limited | Construction | 2007 |
| Guardify Security Limited | Extraterritorial | 2024 |
| Gubyon Ltd | Professional & scientific | 2003 |
| Gubyon Property Limited | Real estate | 2017 |
| Guelta Ltd | Wholesale & retail | 2024 |
| Guiding Forces Ltd | Professional & scientific | 2025 |
| Guiding Ltd | Information & communication | 2025 |
| Guildhall Studio Limited | Wholesale & retail | 2020 |
| Gullmark Limited | Construction | 2026 |
| Gunnel Ltd | Construction | 2023 |
| Gurujas Limited | Real estate | 2022 |
| GUT Vitality Ltd | Hospitality | 2023 |
| Gut-Iq Ltd | Manufacturing | 2025 |
| Guthormr Property Ltd | Real estate | 2026 |
| GW Windows, Doors and Conservatories Limited | Construction | 2019 |