| GRH 2011 Ltd | Professional & scientific | 2011 |
| GRH Holdings Ltd | Real estate | 2026 |
| Grid Hosting Limited | Information & communication | 2005 |
| Grid Station Limited | Construction | 2021 |
| Gridstation-Green Connect Limited | Construction | 2021 |
| Griffin Groundworks Limited | Construction | 2017 |
| Griffin Recovery Ltd | Wholesale & retail | 2026 |
| Griffiths Pubs & Restaurants Limited | Hospitality | 2021 |
| Grill & Sauce Limited | Hospitality | 2026 |
| Grillape Limited | Hospitality | 2026 |
| Grip Tight Ltd | Wholesale & retail | 2025 |
| Grit Bricks Ltd | Real estate | 2025 |
| Gritify Limited | Information & communication | 2022 |
| Grittek Ltd | Information & communication | 2018 |
| GRL Ltd | Manufacturing | 2025 |
| GRM2 Limited | Financial services | 2017 |
| GRN Investments Limited | Other services | 2025 |
| Grocery Mart Ltd | Wholesale & retail | 2025 |
| Groombridge Consulting Limited | Professional & scientific | 2025 |
| Grosvenor Contracts (London) Limited | Other services | 2001 |
| Ground Care Limited | Administrative & support | 2016 |
| Ground Level Records Limited | Information & communication | 2005 |
| Group 73 Limited | Financial services | 2018 |
| Groupmcl Limited | Financial services | 2022 |
| Grove Farm Investments Ltd | Financial services | 2026 |
| Grove Improvements Limited | Construction | 2003 |
| Groverine Enterprise Network Alliance Ecommerce Innovations Ltd | Financial services | 2024 |
| Grow Business Solutions Ltd | Professional & scientific | 2015 |
| Grow Emporium Ltd | Wholesale & retail | 2020 |
| Growing ME CIC | Health & social care | 2019 |
| Growth 4 Businesses Limited | Professional & scientific | 2014 |
| Growth 4 Accountancy Collections Limited | Professional & scientific | 2014 |
| Growth 4 Employment Services Limited | Professional & scientific | 2014 |
| Growth Assets Limited | Real estate | 2024 |
| Grsa Ltd | Construction | 2025 |
| Grucha Ltd | Transport & logistics | 2021 |
| GS Construction and Groundwork’S Ltd | Construction | 2025 |
| GS International Ltd | Transport & logistics | 2016 |
| GS Mathoon Limited | Professional & scientific | 2014 |
| GSA Events Limited | Administrative & support | 2019 |
| GSA Incorporated Ltd | Financial services | 2021 |
| GSB Holdings (Midlands) Limited | Financial services | 2022 |
| GSB Tech Solutions Limited | Professional & scientific | 2026 |
| GSC Concreting Ltd | Construction | 2026 |
| Gseq Limited | Administrative & support | 2023 |
| GSG Services Limited | Transport & logistics | 2025 |
| GSM Properties Ltd | Real estate | 2023 |
| GSM Properties NG Ltd | Real estate | 2023 |
| GSM Property Holdings Ltd | Real estate | 2026 |
| Gsm-Chapter Ltd | Information & communication | 2024 |
| GSR Homes Ltd | Real estate | 2018 |
| GSR Trading Group Ltd | Wholesale & retail | 2024 |
| Gsrb Transport Ltd | Transport & logistics | 2025 |
| GSS Cars Ltd | Wholesale & retail | 2024 |
| GSS Lean Consulting Services Limited | Professional & scientific | 2015 |
| GT Consultant Property Ltd | Real estate | 2025 |
| GT Contract Management Limited | Transport & logistics | 2010 |
| GT Couriers (UK) Limited | Transport & logistics | 2002 |
| GT Landscaping and Building Maintenance Ltd | Construction | 2024 |
| GT Structural Services Limited | Construction | 2016 |
| Gtac Partners Ltd | Real estate | 2020 |
| GTD Records Ltd | Information & communication | 2026 |
| Gtech Connected Ltd | Information & communication | 2023 |
| Gtees Care Company Limited | Health & social care | 2025 |
| GTI Properties Limited | Real estate | 2012 |
| GTJ Property Ltd | Real estate | 2019 |
| Gtkays Company Ltd | Professional & scientific | 2025 |
| Gtpraise Music Ltd | Information & communication | 2026 |
| GTS 23 Limited | Hospitality | 2023 |
| GTS Garment Technology Services Ltd | Wholesale & retail | 2013 |
| GTW Software Limited | Information & communication | 2025 |
| Guangli LIU Limited | Wholesale & retail | 2026 |
| Guardian Angels Art Ltd | Wholesale & retail | 2012 |
| Guardian Angels for Children in Need Ltd | Wholesale & retail | 2025 |
| Guardian Building Products Limited | Wholesale & retail | 2012 |
| Guddu Limited | Real estate | 2024 |
| Gudwill Property Ltd | Real estate | 2024 |
| Guided Discovery Therapy Limited | Health & social care | 2025 |
| Guiding Angels Care Ltd | Health & social care | 2024 |
| Guild of Professional Beauty Therapists Limited | Information & communication | 1994 |
| Gujjar & Sons Limited | Real estate | 2016 |
| Gulf Education Partners Ltd | Education | 2025 |
| Gullbuilders Ltd | Construction | 2025 |
| Gully Chungh Limited | Financial services | 2014 |
| Gundersen & Co Ltd | Real estate | 2023 |
| Gunneys Limited | Construction | 2014 |
| Gunni Ltd | Arts & recreation | 2024 |
| Guntaj Transport Limited | Transport & logistics | 2026 |
| Guri Bhullar Express Ltd | Transport & logistics | 2026 |
| Gurkha Catering Derby Ltd | Hospitality | 2025 |
| Gurkha Junction Limited | Hospitality | 2025 |
| Guron Haulage Ltd | Transport & logistics | 2022 |
| Guru Viking Ltd | Information & communication | 2016 |
| Gutu Mirror Limited | Health & social care | 2014 |
| GUY & Kenny Limited | Other services | 2005 |
| GUY Simmonds Business Transfers Limited | Real estate | 1992 |
| GV Immigration Ltd | Administrative & support | 2023 |
| GV Property Management Limited | Real estate | 2023 |
| GVP Logistic Ltd | Professional & scientific | 2020 |
| GW Project Solutions Limited | Professional & scientific | 2017 |