| Florian Dussopt Design Studio Limited | London | 2017 |
| Florian Gadsby Limited | Barnet | 2021 |
| Florian Zumfelde Limited | Tiverton | 2007 |
| Florida Adventure Limited | Driffield | 2017 |
| Florida FUN Competitions Limited | Edinburgh | 2023 |
| Floriental Ltd | Manchester | 2023 |
| Florilegium Limited | London | 2009 |
| Florio Installations Ltd | Chichester | 2023 |
| Floristart Ltd | Market Harborough | 2025 |
| Florrale Ltd | London | 2024 |
| Flos Collective CIC | Glasgow | 2024 |
| Flosart Ltd | London | 2026 |
| Floss Productions Ltd | Cardiff | 2024 |
| Flossing Training Ltd | Whitstable | 2024 |
| Flossy and BOO Ltd | Cardiff | 2016 |
| Flostunts Limited | Esher | 2013 |
| Flotheproducer Ltd | London | 2020 |
| Flotsam Sessions Community Interest Company | London | 2020 |
| Flourish & Swirl Ltd | Edinburgh | 2020 |
| Flourish Arts Network CIC | Benfleet | 2025 |
| Flourish Landscaping Ltd | Surbiton | 2022 |
| Flourish Yoga Ltd | Dorking | 2023 |
| Flow & Reform Ltd | Blaydon-On-Tyne | 2026 |
| Flow Academies Ltd | Harlow | 2021 |
| Flow and Fuel Ltd | Exeter | 2025 |
| Flow Boxing Company Limited | Sheffield | 2022 |
| Flow Combat Sports Community Interest Company | Alva | 2023 |
| Flow Fitness Woking CIC | Woking | 2025 |
| Flow Foiling Ltd | Portland | 2024 |
| Flow Graphic Design Ltd | Glasgow | 2013 |
| Flow Haven Studios Limited | London | 2025 |
| Flow Life Limited | Woodford Green | 2018 |
| Flow Media & Events Limited | London | 2016 |
| Flow North Limited | Halkirk | 2021 |
| Flow Nova Studios Ltd | Warrington | 2025 |
| Flow Performance & Wellness Limited | Colchester | 2012 |
| Flow Performance & Wellness Rowhedge Limited | Colchester | 2026 |
| Flow Photography Festival Limited | Dingwall | 2016 |
| Flow Pilates Studios Ltd | High Wycombe | 2025 |
| Flow Refine Ltd | Barnsley | 2026 |
| Flow Reformer Ltd | Barnsley | 2025 |
| Flow Reformer Poole Ltd | Poole | 2026 |
| Flow Reformer Studios Ltd | Nottingham | 2026 |
| Flow Ribble Valley Limited | Accrington | 2025 |
| Flow Soundsystem Ltd | Oxford | 2024 |
| Flow State Fit Club Ltd | Mitcham | 2025 |
| Flow State Group Limited | Greenhithe | 2023 |
| Flow State Pilates Limited | St. Neots | 2026 |
| Flow Studio Ipswich Limited | Ipswich | 2012 |
| Flow Studio. Doncaster Ltd | Doncaster | 2024 |
| Flow Style Ltd. | Maidstone | 2015 |
| Flow Submission Grappling Ltd | Warrington | 2024 |
| Flow Swim Ltd | Whitby | 2024 |
| Flow Therapies Ltd | Plymouth | 2018 |
| Flow Wellness Ltd | Wirral | 2025 |
| Flow With CLO Limited | Potters Bar | 2024 |
| Flow Workout Ltd | London | 2025 |
| FLOW-3 Limited | East Ham | 2020 |
| Flower Fusion Limited | Dyce | 2000 |
| Flower House Tattoo Ltd | Accrington | 2022 |
| Flower Preservation Workshop Ltd | Somerton | 2015 |
| Flowerbite Ltd | Horncastle | 2014 |
| Flowered Ltd | Westcliff-On-Sea | 2024 |
| Flowerpetal Limited | Nottingham | 2025 |
| Flowerpot Entertainment Limited | Guildford | 2020 |
| Flowers by Peggy Marie Limited | Tamworth | 2016 |
| Flowers Towers Limited | Margate | 2022 |
| Flowers With Love Ltd | Stafford | 2014 |
| Flowery Watts Productions Ltd | Cardiff | 2026 |
| Flowfitness Limited | Manchester | 2016 |
| Flowhouse Studio Ltd | Caerphilly | 2026 |
| Flowing Body Pilates Ltd | London | 2014 |
| Flowmotion Media Ltd | London | 2026 |
| Flows With FI Ltd | North Shields | 2025 |
| Flowsource Limited | Singleton, Poulton Le Fylde | 1990 |
| Flowspire Union Ltd | Kington | 2025 |
| Flowstate Fitness Coaching Ltd | Isleworth | 2025 |
| Flowstate Games Ltd | London | 2021 |
| Flowstorm Ltd | Halesworth | 2012 |
| Flowtation Music Ltd | Peterhead | 2012 |
| Flowtonomy Limited | Grays | 2025 |
| Flowtune Ltd | London | 2024 |
| Floyd Technical Services Ltd | Whitley Bay | 2014 |
| Flo’S Fitness Boutique Ltd | Ayr | 2020 |
| FLP Entertainment Ltd | Droitwich | 2012 |
| FLS Events Ltd | Birkenhead | 2026 |
| FLS Miljo Limited | London | 1994 |
| FLS Productions Ltd | Oldham | 2026 |
| Flsx UK Ltd | Godalming | 2026 |
| FLT Community Trading Limited | Preston | 2010 |
| Fltf Academy Group Limited | Staines-Upon-Thames | 2025 |
| Fluff Alley Limited | Leyland | 2004 |
| Fluffy Pages Limited | London | 2024 |
| Fluid Adventures Ltd | London | 2012 |
| Fluid Graphic Designs Limited | Birmingham | 1995 |
| Fluid Leisure Ltd | Knaphill, Woking | 2018 |
| Fluid Motion Coaching Ltd | Kinross | 2024 |
| Fluid Motion Theatre Company | Southampton | 2010 |
| Fluid Ounce Limited | Seaford | 1998 |
| Fluid Productions Ltd | Cockermouth | 2004 |