| Gary Broomhead Limited | Construction | 2025 |
| Gary Parker Plumbing & Heating Limited | Construction | 2017 |
| Gary Rhodes Engineering Ltd | Professional & scientific | 2023 |
| GAS Associates Limited | Professional & scientific | 2014 |
| GAS Force One Ltd | Construction | 2018 |
| GAS Tight Industries Ltd | Construction | 2017 |
| GAS Training (UK) Limited | Education | 2009 |
| Gasbey Ltd | Real estate | 2014 |
| Gascoyne & Beever Limited | Construction | 1981 |
| Gasfix Yorkshire Limited | Construction | 2017 |
| Gasseal Limited | Professional & scientific | 2014 |
| Gastroexpert Ltd | Health & social care | 2021 |
| Gaswyse Ltd | Energy | 2019 |
| Gate Inn (Tansley) Limited | Hospitality | 2024 |
| Gate Specialists Ltd | Construction | 2022 |
| Gatecrasher Apartments Limited | Real estate | 2016 |
| Gated Community Caretakers Ltd | Households | 2025 |
| Gatehouse Investments (Hathersage) Limited | Hospitality | 2006 |
| Gatehouse Network Installations Ltd | Information & communication | 2016 |
| Gateway Housing Support Ltd | Real estate | 2026 |
| Gateway West (UK) Limited | Administrative & support | 2021 |
| Gather Hair Collective Limited | Other services | 2023 |
| Gaughan Plumbing & Heating Ltd | Construction | 2023 |
| Gauntlet Consultancy Ltd | Other services | 2022 |
| Gav's Truck Shop Ltd | Wholesale & retail | 2024 |
| Gavin Miller Hand Surgery Limited | Health & social care | 2009 |
| Gaye Services Limited | Health & social care | 2020 |
| GAZ Blinds Limited | Wholesale & retail | 2023 |
| Gaza Bakery Ltd | Wholesale & retail | 2025 |
| Gazcorp Ltd | Administrative & support | 2023 |
| Gazelle Media Studio Ltd | Information & communication | 2026 |
| Gazelle Security Group Ltd | Administrative & support | 2020 |
| GB Boxing Events Limited | Arts & recreation | 2017 |
| GB Broadcast Media Limited | Information & communication | 2014 |
| GB Ecology Limited | Administrative & support | 2017 |
| GB Electrical (Sheffield) Limited | Construction | 2004 |
| GB Groundworks and Construction Limited | Construction | 2014 |
| GB Ice Swimming Association Ltd | Arts & recreation | 2023 |
| GB Joinery (Sheffield) Ltd. | Construction | 2003 |
| GB Motors Trade Limited | Wholesale & retail | 2025 |
| GB Neepsend Ltd | Wholesale & retail | 2023 |
| GB Physiotherapy & Case Management Ltd | Health & social care | 2025 |
| GB Posters & Merchandise Limited | Wholesale & retail | 2024 |
| GB Prime Builders Ltd | Construction | 2024 |
| GB Promotions Limited | Arts & recreation | 2012 |
| GB Test Consultants Limited | Information & communication | 2010 |
| GB Wang Limited | Health & social care | 2006 |
| GBC Homes Limited | Real estate | 2017 |
| GBD Garden & Property Services Ltd | Construction | 2025 |
| Gbdc Limited | Manufacturing | 2003 |
| Gbemisola Wears Ltd | Wholesale & retail | 2025 |
| GBH Exhibition Forwarding Limited | Transport & logistics | 1976 |
| GBS Property Developments Ltd | Construction | 2022 |
| GCB Installations Ltd | Construction | 2023 |
| Gcck RTM Company Limited | Households | 2025 |
| GCD Services Ltd | Administrative & support | 2024 |
| GCI Construction Limited | Construction | 2004 |
| GCM Utilities Limited | Other services | 2019 |
| GCS Consulting Engineers Limited | Professional & scientific | 2016 |
| GD Autos Trading Ltd | Wholesale & retail | 2026 |
| GD International Training and Security Consultancy Ltd | Education | 2015 |
| GD Walters Limited | Construction | 2002 |
| GDB Construction (Sheffield) Ltd | Construction | 2004 |
| Gddcs Ltd | Information & communication | 2020 |
| GDF Property Ltd | Real estate | 2026 |
| Gdma Developments Limited | Construction | 2016 |
| Gdma Estates Limited | Real estate | 2005 |
| Gdma Facilities Limited | Construction | 2011 |
| Gdma Group Limited | Financial services | 2010 |
| Gdma Holdings Limited | Extraterritorial | 2010 |
| Gdma Limited | Extraterritorial | 2010 |
| Gdma Management Limited | Extraterritorial | 2010 |
| Gdmd Consulting Ltd | Other services | 2022 |
| Gdpr Savvy Limited | Information & communication | 2017 |
| GDR South Yorkshire Limited | Manufacturing | 2010 |
| GDS Records Limited | Information & communication | 2020 |
| GDS Services Ltd | Construction | 2023 |
| GDS Tours LLP | | 2020 |
| GDT Sales & Marketing Limited | Wholesale & retail | 2016 |
| GE FM Limited | Construction | 2020 |
| GE Grullo Ltd | Other services | 2025 |
| GE Integrity Limited | Professional & scientific | 2024 |
| GE Renovations Limited | Construction | 2014 |
| GEA Healthcare Ltd | Health & social care | 2024 |
| Gear Group Consultancy Ltd | Professional & scientific | 2026 |
| Gearcentral Ltd | Wholesale & retail | 2025 |
| Gearivo Limited | Wholesale & retail | 2025 |
| Geartronics Ltd | Manufacturing | 2006 |
| Gedbra Industries Limited | Professional & scientific | 2013 |
| Geden UK Ltd | Other services | 2025 |
| GEE GUL Limited | Hospitality | 2025 |
| Geeyaa Ltd | Real estate | 2023 |
| Geezers Cafe Limited | Hospitality | 2023 |
| GEH Imaging Limited | Health & social care | 2025 |
| Geiglenvironmental Ltd. | Administrative & support | 2015 |
| Geka UK Limited | Wholesale & retail | 2012 |
| Gekko Access Ltd | Professional & scientific | 2007 |
| GEL Investments Ltd | Financial services | 2018 |
| Gelder Horticultural Ltd | Administrative & support | 2024 |
| Geleva Services Ltd | Administrative & support | 2026 |