| First Point Waste Ltd | London | 2025 |
| First Recycling Limited | Stanmore | 2026 |
| First Removals Ltd | Church Village | 2025 |
| First Scrap Limited | | 2006 |
| First Water Hygiene Ltd | Warrington | 2020 |
| First.Power.Ja Ltd | Oxford | 2024 |
| Firth Logistics Ltd | Bedworth | 2018 |
| Fishbone Waste Ltd | Newcastle Upon Tyne | 2021 |
| Fisher Group Services Ltd | Manchester | 2026 |
| Fisher OPS Ltd | Bootle | 2026 |
| Fisher Recycling Ltd | East Grinstead | 2018 |
| Fit for the TIP Limited | Kingston Upon Thames | 2026 |
| Fitch Recycling Solutions Limited | Oldham | 2012 |
| Fitfield Solution Ltd | Melton Mowbray | 2025 |
| Fitz- FLO Drainage Solutions Ltd | Poole | 2025 |
| Fitzpatrick Environmental Ltd | Margate | 2026 |
| Five Rivers Haulage Limited | West Drayton | 2007 |
| Five Star Removals and Clearances Ltd | Bournemouth | 2025 |
| Five Star Waste Management Ltd | London, | 2025 |
| Fivestar Hull Limited | Hull | 1991 |
| Fivestar Waste Collection Ltd | Birmingham | 2018 |
| FIX Solutions Pro Ltd | London | 2025 |
| FJC Excavation Limited | Bootle | 2014 |
| FJC Topco Limited | Rainham | 2013 |
| FJG Plant Hire & Sales Ltd | Glasgow | 2019 |
| FJK Traders Ltd | Rochdale | 2021 |
| FJL Recycling Ltd | Iver | 2013 |
| FKM Metals & Recycling Ltd | Rugby | 2025 |
| Flamebreak Limited | Bromley | 2025 |
| Flannigan & Border Area 5 Limited | Berwick-Upon-Tweed | 2018 |
| Flannigan & Border Skip Hire Area 1 Limited | Berwick-Upon-Tweed | 2011 |
| Flannigan & Border Skip Hire Area 2 Ltd | Berwick-Upon-Tweed | 2017 |
| Flannigan & Border Skip Hire Area 3 Ltd | Berwick-Upon-Tweed | 2017 |
| Flannigan & Border Skip Hire Area 4 Ltd | Berwick-Upon-Tweed | 2017 |
| Flannigan & Border Skip Hire Area 6 Ltd | Berwick-Upon-Tweed | 2021 |
| Flappit Tipping and Recycling Limited | Brighouse | 2013 |
| Flash Group Limited | London | 2025 |
| Flash Waste Removal Ltd | Ilford | 2024 |
| Flashback Trading Ltd | Nottingham | 2023 |
| Fleet Skips Ltd | Swanley Village | 2016 |
| Fleetco Limited | Liverpool | 2010 |
| Fleetwood E S Holdings Limited | Bristol | 2016 |
| Fleetwood Recycling Limited | Yeovil | 2011 |
| Fleisch Team Ltd | Swindon | 2024 |
| Fletcher & Sons Landscaping, Driveways & Fencing Ltd | Manchester | 2026 |
| Fletcher Plant Limited | Sheffield | 2013 |
| FLH Waste Solutions Ltd | Gloucester | 2022 |
| Flidor Limited | Dereham | 1990 |
| Flo-Fast Ltd | Wolverhampton | 2025 |
| Flo-Rite Draincare Ltd | York | 2025 |
| Flock Dynamics Ltd | London | 2025 |
| Flofix Property Services Ltd | Charvil | 2025 |
| Flood Consult Ltd | London | 2014 |
| Flood Control (NI) Limited | Bangor | 2008 |
| Flood Response Services Limited | Cheadle | 2024 |
| Floodplan Contracts Ltd | Cardiff | 2012 |
| Florentinmirel Ltd | Preston | 2025 |
| Flormetal Limited | Harlow | 2024 |
| Flory Smart Ltd | Coventry | 2020 |
| Flourish & Associates Ltd. | Aberdeen | 2015 |
| Flow Clear Solutions Ltd | London | 2025 |
| Flow Drainage Group Ltd | Cardiff | 2024 |
| Flow Drainage Ltd | Cardiff | 2023 |
| Flow EP Ltd | London | 2025 |
| Flow Force Ltd | London | 2026 |
| Flow Free Mechanical Services Limited | Waltham Abbey | 2018 |
| Flow Management Services Ltd | Stockport | 2021 |
| Flow Management Solutions Ltd | Andover | 2023 |
| Flow Sure Drains Ltd | Bristol | 2023 |
| Flow Water Hygiene Services Ltd | Bishop'S Stortford | 2024 |
| FLOW2 Limited | Manchester | 2013 |
| FLOW2.2 Limited | Manchester | 2020 |
| FLOW25 Ltd | Taunton | 2024 |
| Flowaway Drainage Limited | London | 2015 |
| Flowcraft Groundworks Ltd | Hemel Hempstead | 2023 |
| Flowfinity Ltd | Pontefract | 2021 |
| Flowmaster Drainage Limited | Redhill | 2026 |
| Floworx Drainage Solutions Ltd | Bristol | 2025 |
| Flowpro Drainage Limited | Sowerby Bridge | 2023 |
| Flowright Drainage Limited | Hitchin | 2025 |
| Flowrite Drainage Ltd | Christchurch | 2024 |
| Flowsafe Compliance Ltd | Bury St Edmunds | 2024 |
| Flowstead Drainage Ltd | Salisbury | 2026 |
| Flowtec Pumps & Controls Limited | Hampshire | 2022 |
| Flowtech Services Ltd | Bromley | 2003 |
| Flowtek Water Services Limited | Cardiff | 2026 |
| Fluence Investments Ltd. | London | 2015 |
| Fluid Dynamics International Limited | Dorchester | 1974 |
| Fluid Fusion Services Ltd | London | 2025 |
| Fluid Works Limited | Broadstone | 2012 |
| Fluidity Drainage and Landscapes Ltd | Worcester | 2023 |
| Fluorocycle Ltd | Letchworth Garden City | 2026 |
| Flush & Flow Drainage Commercial Limited | Barnet | 2023 |
| Flush Drainage Limited | Gillingham | 2023 |
| Flush Fitting Limited | Birmingham | 2016 |
| Flush Force UK Limited | Hove | 2025 |
| Flushaway Drainage Ltd | Rochester | 2024 |
| Flushrain Limited | Farnham Common | 2013 |
| Flyers Grab Hire Ltd | St. Albans | 2017 |
| Flynn Waste Management Services Ltd | Newcastle Upon Tyne | 2018 |