| Gaulby Lane Stoughton Ltd | London | 2024 |
| Gauzville Ltd | Salford | 2008 |
| GAV1N Ltd | Harrogate | 2020 |
| Gavin Goodman Limited | Enniskillen | 2024 |
| Gavin International Trading Co., Ltd | Manchester | 2022 |
| Gavin James Cluer Ltd | Leicester | 2022 |
| Gavin Jones Group Limited | Windlesham | 1988 |
| Gavin S Stewart Ltd. | Falkirk | 2011 |
| Gavin Stirling Limited | London | 2016 |
| Gavin-Kelly Limited | Burscough | 2008 |
| GAW Nottingham Ltd | Nottingham | 2009 |
| Gawsworth Hall Limited | Cheshire | 1993 |
| Gawsworth Old Hall Flats Management Company Limited | Macclesfield | 1984 |
| Gayatri Consulting Ltd | Birmingham | 2015 |
| Gaycor Technology Limited | Manchester | 2017 |
| Gaydonfield Associates Limited | Ludlow | 2014 |
| Gayena Ltd | Manchester | 2023 |
| Gazeley Group Limited | Newmarket | 2022 |
| Gazette Media Company Limited | London | 1926 |
| Gaziville Ltd | Salford | 2008 |
| Gazville Ltd | Lancashire | 2007 |
| Gazza IMP and EXP Co., Ltd | London | 2025 |
| GAZZA8 Ltd | Doncaster | 2026 |
| Gazzard and Co Limited | Oldham | 2014 |
| GB and Co Consultancy Ltd | Preston | 2016 |
| GB Commerce Group Invest Ltd | Dover | 2022 |
| GB Commerce Group Ltd | Dover | 2022 |
| GB Design Ltd | Wisbech | 2024 |
| GB Devs Shelco 1611 Limited | London | 2023 |
| GB Devs Shelco Limited | London | 2023 |
| GB Devs Shelfco 1 Limited | London | 2024 |
| GB Devs Shelfco 16 Limited | London | 2024 |
| GB Devs Shelfco 21 Limited | London | 2024 |
| GB Drone Surveys Ltd | Gloucester | 2025 |
| GB Facades Ltd | Barnet | 2023 |
| GB Foam Direct Ltd | London | 2020 |
| GB Foam Ltd | London | 2021 |
| GB Helicopters Ltd | Knutsford | 2014 |
| GB Home Surveys Ltd | Gloucester | 2020 |
| GB Labs Technology Limited | Reading | 2014 |
| GB Mantels Designs Limited | Ossett | 2011 |
| GB Meraki AIM Limited | Southsea | 2019 |
| GB Millionaire Ltd | London | 2026 |
| GB Motor Services Ltd. | Ross-On-Wye | 2015 |
| GB Multi Service and Facilities Management Ltd | Slough | 2022 |
| GB NRG Developments Ltd | Taunton | 2015 |
| GB Oils Limited | Birchwood | 2006 |
| GB Online Ltd | London | 2026 |
| GB Patterns Holdings Limited | Ilkeston | 2023 |
| GB Power Generators Ltd | Crawley | 2022 |
| GB Power Investments Ltd | Crawley | 2022 |
| GB Power Switchgear Ltd | Crawley | 2022 |
| GB Property Holdings Limited | Harlow | 2021 |
| GB Renewables Limited | Aylesbury | 2016 |
| GB Rusino Investment Co., Ltd | West Midlands, England, | 2015 |
| GB Second Shelf Company Limited | London | 2025 |
| GB Shelf Company Limited | London | 2023 |
| GB Site Services Limited | Ibstock | 2025 |
| GB Skips Limited | London | 2009 |
| GB Trade Enterprises Limited | Enfield | 2013 |
| GB Warehouse 4 Ltd | Gloucester | 2023 |
| GB Waste Limited | Doncaster | 2019 |
| GB Wiring Systems Limited | Coventry | 2002 |
| Gbase Limited | Barnard Castle | 2021 |
| Gbbb (IP) Ltd | Crowthorne | 2018 |
| Gbbr-Sweden Invest Limited | London | 2025 |
| Gbbr-Sweden Limited | London | 2025 |
| GBC Property Ltd | Croydon | 2023 |
| GBE Support Limited | London | 2024 |
| Gbeot Limited | Bolton | 2020 |
| GBI Solutions Ltd | Morpeth | 2014 |
| Gbis Communications Ltd | Colne | 2020 |
| GBM Asbestos Surveys Limited | Louth | 2004 |
| GBM Demolition Limited | Louth | 2017 |
| GBM Properties Limited | Hatfield | 2013 |
| Gbmedics Ltd | Taunton | 2022 |
| GBN Construction Ltd | Newry | 2011 |
| GBR Estates Limited | Aylesbury | 2010 |
| Gbre Limited | Aylesbury | 2019 |
| Gbritish Elite Schools (Together) Ltd | Macclesfield | 2020 |
| GBS Automation Limited | Nelson | 2024 |
| GBS Limited | Hawkwell | 2000 |
| GBS News Ltd | Greenock | 2018 |
| GBW Recruitment Limited | Glasgow | 2006 |
| GC Accountants Limited | London | 2004 |
| GC Automation Industrial Ltd | London | 2016 |
| GC Computers Manufacture Ltd | Preston | 2021 |
| GC Contracts Ltd | Coventry | 2024 |
| GC Lettings Limited | Stanmore | 2012 |
| GC Optics Limited | Belfast | 2026 |
| GCA Land Ltd | Chelwood Gate | 2021 |
| GCB Investment Management Ltd | Edinburgh | 2012 |
| GCC Property Development Limited | Moulton Seas End | 2013 |
| GCE Boat Management Ltd | Kington | 2022 |
| Gcect Ltd | Manchester | 2026 |
| Gcellma Ltd | London | 2025 |
| Gcit Europe Limited | London | 2015 |
| Gcjb Ltd | Londonderry | 2015 |
| GCK Healthcare Ltd | London | 2023 |
| GCL Electrical Limited | Wadhurst | 2010 |