| Fylde Drainage Solutions Limited | Blackpool | 2025 |
| G & a Car Spares Limited | Norfolk | 2015 |
| G & a M Lawson Limited | Workington | 1992 |
| G & C Wastepaper Company Limited | Hoddesdon | 1996 |
| G & E Carbreakers Limited | Merseyside | 2002 |
| G & L Auto Spares Limited | Colchester | 2005 |
| G & L Environmental Ltd | Ramsgate | 2011 |
| G & M Services Limited | Redbridge | 2000 |
| G & O Waste Solutions Limited | Stevenson | 2025 |
| G & P Total Services Limited | Liverpool | 2016 |
| G & P Waste Services Limited | Rotherham | 2015 |
| G & S Clearance Limited | Hove | 2017 |
| G & S Waste Management Limited | Loughton | 2012 |
| G and R Waste Ltd | Northampton | 2025 |
| G Bloor & Sons Limited | Ashbourne | 2003 |
| G C H Recycling Ltd. | Dartford | 2018 |
| G C Stevens & Sons Limited | Melton Mowbray | 2013 |
| G D Golding Skip Hire Limited | Staffordshire | 2002 |
| G Dog Recovery Limited | Gloucester | 2025 |
| G E D Environmental Services Ltd | Stoke-On-Trent | 2016 |
| G E Service Group Limited | Leicester | 2011 |
| G Farwell Limited | Lymington | 1971 |
| G H Transport Yorkshire Limited | Bradford | 2024 |
| G J Seals Ltd | Hinckley | 2014 |
| G M Metals Ltd | Bolton | 2021 |
| G M Modular Plastic Systems Limited | Liverpool | 2019 |
| G M S Enterprises Ltd. | Oban | 2001 |
| G Moore Haulage Limited | Bedford | 1992 |
| G P C Clear Solutions Limited | Sittingbourne | 2003 |
| G P Drain Surveys Limited | Leeds | 2013 |
| G P R 2 Ltd | Melton Mowbray | 2010 |
| G P Removals & Waste Management Ltd | Swadlincote | 2024 |
| G P Waste Solutions Ltd | Leeds | 2026 |
| G Rags 72 Ltd | London | 2019 |
| G S Doyle Limited | Egham | 2014 |
| G S Polymers Limited | Manchester | 2017 |
| G T Services (Doncaster) Ltd | Doncaster | 2013 |
| G W Cockburn Water & Drainage Services Ltd | Kelso | 2015 |
| G W Tippers Ltd | Normandy | 2014 |
| G W Traders Ltd | Purley | 2014 |
| G Wilson Contractors Limited | Barnard Castle | 2016 |
| G Z Emergency Drainage Services Ltd | London | 2026 |
| G&B Finch Serv Ltd | London | 2020 |
| G&B Waste Ltd | Benfleet | 2025 |
| G&G Waste Recycling Limited | Liverpool | 2009 |
| G&G Waste Removal Ltd | Northwood | 2022 |
| G&J Geoenvironmental Consultants Ltd | Loughborough | 2013 |
| G&L Clothes Ltd | Luton | 2025 |
| G&M Waste Management Ltd | Slough | 2026 |
| G&P Langage Limited | Exmouth | 2014 |
| G&R Haulage Ltd | Southall | 2019 |
| G. & G. Pump Services Limited | Kenilworth | 1994 |
| G. Clark & Sons Limited | | 1946 |
| G. Clements Ltd. | Sutton In Ashfield | 1971 |
| G. HOW Clean Limited | Pontypridd | 2003 |
| G. O'Brien & Sons (Nationwide Demolition Contractors) Limited | Sunderland | 1995 |
| G. Seymour & SON Limited | Fareham | 1964 |
| G.A.D Services Ltd | Grays | 2024 |
| G.A.E. Smith (Holdings) Limited | Telford | 1972 |
| G.A.Harvey & Co.(London)Limited | London | 1913 |
| G.D. Environmental Services Limited | Llantarnam Industrial Park | 2003 |
| G.E. Bridger Limited | Waltham Abbey | 1983 |
| G.E.T. Carter Drainage Limited | Horley | 1983 |
| G.F. Gordon (Plant Hire) Limited | South Ockendon | 2000 |
| G.F. Gordon (Waste Management) Ltd | South Ockendon | 2012 |
| G.H. by Products (Derby) Limited | Long Bennington | 2015 |
| G.I. Hadfield & SON Limited | Newark | 1980 |
| G.I.A Servicing Ltd | Bradford | 2019 |
| G.M.P. Baird Limited | Off Hypatia St Bury Road | 1977 |
| G.R. 1980 Limited | Manchester | 1980 |
| G.S Contract Services Ltd | Rochester | 2022 |
| G.S Environmental Ltd | Northumberland | 2005 |
| G.W. Axup & Co Limited | Goole | 1987 |
| G.W. Drains Ltd | London | 2007 |
| G4 Pallets (UK) Ltd | Birmingham | 2022 |
| G: Garden, Waste and Home Services Ltd | Plymouth | 2020 |
| GA Electrical Waste Limited | Fareham | 2016 |
| Gabor Properties Ltd | Southampton | 2019 |
| Gaea Environmental Limited | Portadown | 2016 |
| Gaffneys Waste Disposal Ltd | Hove | 2003 |
| Gainsborough Decorations Limited | Merthyr Tydfil | 1997 |
| Gainsborough Furniture & Resource Centre Community Interest Company | Gainsborough | 2012 |
| Gainsborough Skip & Aggregates Ltd | Gainsborough | 2025 |
| Gainstream Limited | Wadebridge | 1989 |
| Galaxy Water Filters Ltd | Hayes | 2024 |
| GALEX4REAL Services Limited | London | 2025 |
| Galgorm Waste Solutions Ltd | Ballymena | 2026 |
| Galliford TRY Asset Intelligence Limited | Uxbridge | 2022 |
| Galloway Renewable Power Ltd | Glasgow | 2018 |
| Galweyne Rubbish Ltd | Birmingham | 2025 |
| Gamber Generation Limited | St Owens Cross | 2013 |
| Gamble Plant (Norfolk) Limited | Hempton | 1999 |
| Game of Life Ltd | Bristol | 2022 |
| GAP Alba Ltd | Perth | 2023 |
| GAP Alternative Fuels Limited | Swansea | 2018 |
| GAP Ice Ltd | Tyne And Wear | 2017 |
| GAP North West Limited | Gateshead | 2015 |
| GAP Organics Group Limited | Gateshead | 2021 |
| GAP Organics Limited | Gateshead | 2018 |
| GAP Polymers Ltd | Gateshead | 2017 |