| Juno Recycling Limited | Thirsk | 2023 |
| Jupiter Clear-Away Services Limited | Kingswinford | 2023 |
| Jurassic House Clearance Company Limited | Weymouth | 2025 |
| Jurassic Waste Ltd | Exeter | 2024 |
| Just BIN Bags Limited | Manchester | 2012 |
| Just Clear Ltd | London | 2012 |
| Just Deals SW Limited | Bideford | 2024 |
| Just Drainage Ltd | Harwich | 2026 |
| Just Drainage Services Limited | Orpington | 2021 |
| Just Drains Limited | Bolton | 2019 |
| Just Glass Recycling Limited | Southsea | 2020 |
| Just Grab Ltd | Frome | 2014 |
| Just Junk (London) Ltd | London | 2022 |
| Just Moving Muck Limited | Uxbridge | 2025 |
| Just Surveys Ltd | Gloucester | 2006 |
| Just Tankers Holdings Ltd | Cardiff | 2020 |
| Just Tankers Road Tanker Ltd | Cardiff | 2020 |
| Just Waste Limited | Pudsey | 2025 |
| Just Waste OIL Ltd | Coventry | 2021 |
| Just Waste Removals Limited | Wigan | 2023 |
| Just Wood Leicestershire C.I.C. | Loughborough | 2012 |
| Justicetown A.D. Limited | Carlisle | 2013 |
| Justin Site Services Ltd | Plymouth | 2026 |
| Justin Steward Clearances Limited | Dereham | 2026 |
| Justme Waste and Recycling Ltd | Lincoln | 2025 |
| Justproof Limited | Leeds | 1991 |
| JV Recycling Limited | Waltham Cross | 2015 |
| JVF Haulage Ltd | Manchester | 2025 |
| Jvhb Limited | Byfleet | 2026 |
| JW & Sons Ltd | Middlesbrough | 2025 |
| JW Garden Services Ltd | Hereford | 2019 |
| JW Waste Ltd | Waterlooville | 2026 |
| JW Waste Management Limited | Harrow | 2016 |
| JW Waste Recycling Limited | Radstock | 2009 |
| Jwbm Group Ltd | Ashford | 2017 |
| JWC Granite City Ltd | Aberdeen | 2019 |
| Jwilliams Limited | London | 2025 |
| JWL Services (UK) Limited | Chatham | 2012 |
| JWL Waste Management Ltd | Grays | 2023 |
| JWS Holdings Limited | Salford | 2004 |
| JWS Waste & Recycling Services Limited | Salford | 1983 |
| J’S Gardening and Waste Removal Limited | Jarrow | 2026 |
| K & B Recycling Limited | Milton Keynes | 2020 |
| K & K Moves Limited | Teddington | 2020 |
| K & M Constructive Limited | Birmingham | 2019 |
| K & M Waste Limited | Chester Le Street | 2021 |
| K & S Services (South East) Ltd | Whitstable | 2003 |
| K & S Skips Ltd | Wolverhampton | 2018 |
| K & S Walker Ltd | High Wycombe | 2020 |
| K & W Fabrications Limited | Caterham | 1985 |
| K a Anderson (Metal Recyclers) Limited | Ripon | 2002 |
| K a Parchment Ltd | Oldbury | 2019 |
| K and T Skip Services Ltd | Wolverhampton | 2025 |
| K Drainage Limited | Hadlow | 2015 |
| K F Drainage Solutions Ltd | Daventry | 2019 |
| K G Metals and Waste Limited | Bristol | 2008 |
| K K B Remediation Limited | Rochester | 2010 |
| K M Skip Hire Limited | Dorchester | 2002 |
| K Maestro Ltd | Dagenham | 2020 |
| K Moore Solutions Limited | Cardiff | 2013 |
| K P Removals Ltd | Luton | 2021 |
| K R Midlands Ltd | Liverpool | 2022 |
| K R South Limited | Liverpool | 2016 |
| K S Plastic Ltd | Birmingham | 2017 |
| K Star Solutions Ltd | Exeter | 2009 |
| K T Plastics Limited | Flint | 2022 |
| K Thomas Waste/Recycling Limited | Neath | 2014 |
| K&B Aggregates and Recycling Ltd | Lincoln | 2025 |
| K&C Waste Ltd | Faringdon | 2024 |
| K&J Skip Hire Ltd | Barking | 2019 |
| K&M Group Limited | Hayes | 2018 |
| K&N Business Services Ltd | Dagenham | 2014 |
| K&S Scrapmetals Ltd | Southampton | 2013 |
| K-Trac Ltd | Nottingham | 2024 |
| K. T. Excavations Limited | Barnsley | 2018 |
| K.A.D Waste Ltd | Leeds | 2026 |
| K.A.M. Plastics Ltd | Heskin | 2013 |
| K.E.R Civil Groundworks Ltd | Southampton | 2020 |
| K.G. Drain Services Limited | Broxbourne | 1993 |
| K.J Waste & Gardening Ltd | Hebburn | 2025 |
| K.J. Howard Civil Engineering Limited | Devon | 1997 |
| K.M Traders (Manchester) Ltd | Manchester | 2018 |
| K.M.R. Skip Hire Limited | Knottingley | 2000 |
| K.M.R. Waste Management Limited | Knottingley | 1999 |
| K.P. Waste Company Limited | Hertfordshire | 1995 |
| K.P.T (SW) Limited | Plymouth | 2003 |
| K.S.D. (Haulage Contractors) Limited | Nuneaton | 1987 |
| K.W.R. Water Treatment Limited | Atherstone | 2012 |
| K2 Polymers Limited | Leicester | 1998 |
| K7 Parts Limited | Great Staughton, St Neots | 2022 |
| K9 Secure Ltd | Birmingham | 2017 |
| Kabi Environmental Services Ltd | Greenford | 2023 |
| Kace Recycling Ltd | Wallsend | 2023 |
| KAI Sheng International Limited | Royston | 2015 |
| Kairodev&Transport Ltd | Birmingham | 2025 |
| Kaishev Clean Ltd | London | 2012 |
| Kaizen FM Group Ltd | Bromborough | 2022 |
| Kala Arts CIC | Leicester | 2023 |
| Kale Logistics Ltd | Knutsford | 2025 |
| Kall Services (Midlands) Ltd | Nuneaton | 2012 |