| LTS Waste Management Ltd | Wolverhampton | 2020 |
| LTU OIL Limited | Deeside | 2025 |
| Luc-A Skip Hire Ltd | Manchester | 2026 |
| Luca 99ENTERPRISE Ltd | London | 2023 |
| Luca B Services Limited | Ilford | 2017 |
| Luca Z Engineering Limited | Middleton | 2019 |
| Lucannezz Recycling Limited | Ashbourne | 2006 |
| Lucas Rubbish Removal Ltd | Nottingham | 2022 |
| Lucas Waste Removals Ltd | Weston-Super-Mare | 2026 |
| Lucky Skip Hire Ltd | Romford | 2014 |
| Luclean Limited | London | 2019 |
| Ludcombe Limited | Dadford | 2014 |
| Ludlow Drain Services Ltd | Ludlow | 2019 |
| Ludlow Drainage Ltd | Ludlow | 2021 |
| Ludlow Skip Hire Ltd | Ludlow | 2013 |
| LUI Solutions Ltd | Swindon | 2021 |
| Lukazhdey Ltd Limited | London | 2025 |
| Lullingstone Water Limited | Dartford | 1983 |
| Luna Waste Services Ltd | Towcester | 2019 |
| Lunar Trader Ltd | London | 2024 |
| Lura Environment Ltd | Walthamstow | 2025 |
| Luton Metal Recycling Limited | Eastcote | 2023 |
| Luton Town Skips Ltd | Hoddesdon | 2019 |
| LUV Waste Ltd | Lilleshall | 2019 |
| LUX Group Limited | Southampton | 2016 |
| Luxe Residential Services Ltd | Bishop'S Stortford | 2025 |
| Luxury Toilet Hire (UK) Limited | Great Dunmow | 2007 |
| LV 81 Waste Limited | Birmingham | 2022 |
| LV Recycling Ltd | London | 2019 |
| LV Skip Hire Ltd | Middlesbrough | 2024 |
| LV Wastewise Ltd | Darlington | 2026 |
| LVS Investments Limited | Motherwell | 2025 |
| LW Services London Ltd | Edgware | 2023 |
| LWC Environmental Ltd | Manchester | 2022 |
| Lwol Limited | Lincoln | 2013 |
| LWP Site Solutions Ltd | Elland | 2020 |
| LWP Trading Ltd | Wakefield | 2025 |
| Lyco Recycling Limited | Stourport-On-Severn | 2018 |
| Lyco Waste Services Ltd | Stourport-On-Severn | 2020 |
| Lydbury Consulting Ltd | London | 2015 |
| Lydney Skip Hire Ltd | Lydney | 2017 |
| Lyle Transport Services Limited | Glasgow | 2001 |
| Lyliths Garden Services Ltd | Kettering | 2024 |
| Lymm Metals Limited | Widnes | 2013 |
| Lynch & Sons Skip Hire Ltd | Warlingham | 2018 |
| Lyndon Water Limited | Mitcham | 2016 |
| Lynx Recycling and Recovery Limited | Grimsby | 2010 |
| Lyons Clearance Services Ltd | Surrey | 2003 |
| Lytham ST Annes Skip Hire Ltd | Preston | 2007 |
| M & a Corporation Ltd | Thornton Heath | 2022 |
| M & B Oils (South West) Ltd | Kingsbridge | 2018 |
| M & B Oils Limited | Buckfastleigh | 2004 |
| M & D Auto Services Limited | Harrow | 2017 |
| M & D Land Solutions Limited | Blackwood | 2023 |
| M & D Trash Masters Limited | Rainham | 2026 |
| M & G Services Limited | Nottingham | 1988 |
| M & I Management Solutions Ltd | Bedford | 2017 |
| M & J Bowers Limited | Yeovil | 2006 |
| M & J Screening & Crushing Ltd | Merthyr Tydfil | 2021 |
| M & J Solutions York Limited | Bradford | 2020 |
| M & L Environmental Ltd | Grays | 2025 |
| M & L Van and Waste Services Ltd | Heanor | 2025 |
| M & M Grab Hire Ltd. | Wickford | 2003 |
| M & M Waste Limited | Wednesbury | 2015 |
| M & N Containers Limited | Manchester | 2000 |
| M & P Waste Management Limited | Liverpool | 2025 |
| M & S Cladding and Window Systems Limited | Worcester | 2001 |
| M & S Heverin Limited | Maulden | 2006 |
| M & S Metal Recycling Limited | Liverpool | 2018 |
| M & S Plumbing & Drainage Specialists Ltd | Sunderland | 2024 |
| M & S Recycling Ltd | Westcliff-On-Sea | 2017 |
| M a Callanan Haulage Ltd | High Wycombe | 2007 |
| M a Solutions (Lindum) Ltd | Coventry | 2004 |
| M and M Premier Services Ltd | Sidcup | 2025 |
| M B P International Ltd | Cleckheaton | 2022 |
| M B Skips Ltd | Stockport | 2000 |
| M C L (Civil Engineering Contractors) Limited | Cwmbach,Aberdare | 1992 |
| M C Webb & SON Limited | Newmarket | 2005 |
| M D Recycling Limited | Cardigan | 2010 |
| M D Waste & Recycling Limited | Cardigan | 2012 |
| M Deeprose Trading Ltd | Brighton | 2016 |
| M E C Grab Services Limited | Watford | 2001 |
| M E C Recycling Limited | Lincoln | 2004 |
| M E G Mechanical Limited | Bracknell | 2013 |
| M Glasby Integrated Services Ltd | Scunthorpe | 2026 |
| M H Waste Removals Limited Limited | London | 2025 |
| M Hinder & Sons Ltd | Bristol | 2026 |
| M J & SON Skip Hire Ltd | Leicester | 2025 |
| M J Church (Plant) Limited | Chippenham | 1984 |
| M J GUY Limited | Bournemouth | 2020 |
| M J Services (LEI) Ltd | Leicester | 2025 |
| M J Teale Plant Hire Limited | Thornton-Cleveleys | 2003 |
| M L Water Ltd | Kilmarnock | 2024 |
| M P Water Treatment Services Ltd | Doncaster | 2021 |
| M R Debenham Limited | Newport | 2008 |
| M R Waste Limited | London | 2026 |
| M R Wicks Ltd | Milton Keynes | 2012 |
| M S Drainage Ltd | Reading | 2023 |
| M S H Contractors Limited | County Durham | 2007 |
| M Souter Haulage Ltd | Slough | 2026 |