| FLEXIBLE HEALTHCARE ONE SOLUTIONS LTD | Coatbridge | A rating |
| Flexible Learning School LTD | Birmingham | A rating |
| Flexible Medical Packaging | Lancaster | A rating |
| Flexible Power Systems Ltd | Cowden | A rating |
| FLEXIBLE SUPPORT OPTIONS HOLDINGS LIMITED | Newcastle Upon Tyne | A rating |
| Flexible Support Options Holdings Ltd | Newcastle upon Tyne | A rating |
| Flexible Technology Solutions UK Ltd | Beaconsfield | A rating |
| Flexicare Group Limited | Mountain Ash | A rating |
| Flexicare Homeservices UK Limited | Gloucester | A rating |
| FlexiFone Telecommunications Ltd | Luton | A rating |
| FLEXIFORM BUSINESS FURNITURE LIMITED | London | A rating |
| Flexion Global Ltd T/A Arbortec | Swaffham | A rating |
| Flexion Mobile Plc | London | A rating |
| Flexispot Limited | Northampton | A rating |
| Flexistay Limited | Croydon | A rating |
| Flexitallic UK Ltd | Cleckheaton | A rating |
| Flexitent Ltd | Ascot | A rating |
| Flexitricity Limited | Edinburgh | A rating |
| Flexjet Limited | London | A rating |
| FlexMedical Solutions Ltd | Livingston | A rating |
| Flexotronix Limited | Hove | A rating |
| Flexotronix Ltd | Hove | A rating |
| Flexport International Limited | London | A rating |
| flexpro mobile ltd | Northallerton | A rating |
| FlexSea Ltd | London | A rating |
| Flexserve UK Limited | Cockfosters | A rating |
| FLEXTECH LONDON LTD | Surbiton | A rating |
| FlexTrade UK Limited | London | A rating |
| Flextro Ltd | London | A rating |
| Flextronics Global Services (Manchester) Limited | Appleton | A rating |
| FLEXURE FIT LTD | London | A rating |
| FLEXWEARS UK LTD | Manchester, | A rating |
| flexword Limited | London | A rating |
| FLEXXY EDUCATION LIMITED | Romford | A rating |
| Flick Games Ltd | Deal | A rating |
| Flick Media | Dagenham | A rating |
| Flick. Tech Ltd | London | A rating |
| FLIGHT CARE LIMITED | SOUTHALL | A rating |
| Flight Centre (UK) Ltd | London | A rating |
| Flight Data Systems Limited | West Drayton | A rating |
| FLIGHT DIRECTORS SCHEDULED SERVICES LIMITED | HORLEY | A rating |
| Flight Logistics | Colnbrook | A rating |
| Flight Opco Ltd | West Drayton | A rating |
| FLIGHT POINT LTD | London | A rating |
| Flightman Ltd | BURY | A rating |
| Flights & Holidays UK LTD T/a Travel Junction | Hounslow | A rating |
| FlightSafety International UK Limited | Farnborough | A rating |
| Flightworx Aviation Ltd | Stansted | A rating |
| Flint Bishop Limited | Derby | A rating |
| Flint Consulting Limited | Watford | A rating |
| Flint CPS Inks UK Limited | Manchester | A rating |
| Flint Global Limited | London | A rating |
| FLINT HYDE (LONDON) LIMITED | Harrogate | A rating |
| Flint Ink (U.K.) Limited | Wolverhampton | A rating |
| Flint UK Technology Services Ltd | Watford | A rating |
| Flint Wines Ltd. | London | A rating |
| Flintchoice Limited T/A Bliss Chemist | London | A rating |
| FLINTEC UK LIMITED | Cardiff | A rating |
| Flintfox Europe Limited | Bishops Stortford | A rating |
| Flintham Mackenzie Limited | London | A rating |
| Flinthouse Dental Practice Partnership | St Leonard's On Sea | A rating |
| Flintridge Resources Limited | Omagh | A rating |
| Flipco Ltd | Birmingham | A rating |
| Flipdish UK Limited | London | A rating |
| FLIPPER TECHNOLOGIES LTD | London | A rating |
| Flitwick Cricket Club | Westoning | A rating |
| Flitwick Surgery | Flitwick | A rating |
| Flix Interactive Limited | Bromsgrove | A rating |
| Flixbus UK Limited | Bristol | A rating |
| Flixmedia Ltd | London | A rating |
| Flixton Manor | Urmston | A rating |
| Flo Health UK Limited | London | A rating |
| FLO PR Ltd | London | A rating |
| Floating Palace Ltd | Edinburgh | A rating |
| FLOBIS PROPERTIES LTD | LONDON | A rating |
| Flock Associates LTD | London | A rating |
| Flock Limited | London | A rating |
| Flock.io Ltd | London | A rating |
| floe technology limited | newcastle upon tyne | A rating |
| Flogas Britain | Leicester | A rating |
| Flok Health Ltd | Comberton | A rating |
| Flokk Limited | Mirfield | A rating |
| Flollie Investments Ltd | Weston super Mare | A rating |
| Flood & Civil Ltd | Hornchurch | A rating |
| FloodFlash Limited | London | A rating |
| Flooid Limited | Birmingham | A rating |
| Floorify Limited | South Cave | A rating |
| FLOORING SALES LIMITED | Weybridge | A rating |
| Floors N Carpets Ltd | Blackburn | A rating |
| Floortex Europe Limited | Tewkesbury | A rating |
| Floqast UK Limited | London | A rating |
| FLORA & CURL LTD | BIRMINGHAM | A rating |
| FLORA CATERING LTD | Birmingham | A rating |
| Flora Food Sales UK Limited | London | A rating |
| Flora Gardening Ltd | Dundee | A rating |
| Flora Orthodontics Ltd | LONDON | A rating |
| Floral Haven Ltd. | Glasgow | A rating |
| FLORAL LIMITED | London | A rating |
| Floral Street Fragrances Limited | London | A rating |
| Flordius Chiropractic Ltd T/A Saltaire Chiropractic Clinic | Shipley | A rating |
| Floreat Merchant Banking Limited | London | A rating |
| Florebright Care Ltd | Middlesbrough | A rating |
| Florence Care and Consultancy Service Ltd | Mitcham | A rating |
| Florence Care Ltd | Great Bentley | A rating |
| Florence Care Reading Limited | Reading | A rating |
| FLORENCE COFFEE LTD | Bristol | A rating |
| Florence Dental Laboratory Ltd | Aberdeen | A rating |
| Florence House | Newcastle Under Lyme | A rating |
| Florence House Medical Practice | Manchester | A rating |
| Florence Justice Care Home | Newport | A rating |
| FLORENCE NIGHTINGALE HOSPITALS LTD | MARYLEBONE | A rating |
| Floreon Technology Ltd | Hessle | A rating |
| Flori Construction Limited | London | A rating |
| Florian James Limited | London | A rating |
| Florian Leonhard Fine Violins Limited | London | A rating |
| Florida State University International Programs Association UK | London | A rating |
| FLORIENTAL LTD | Manchester | A rating |
| Florin Court Capital LLP | London | A rating |
| FLOS UK LIMITED | HARROGATE | A rating |
| Floso Limited | London | A rating |
| Floss and Bond Limited | Girvan | A rating |
| Flosverse Techsphere C.I.C | Livingston | A rating |
| Flotation Energy Limited | Edinburgh | A rating |
| Flour to the People Ltd | London | A rating |
| Flourish | BRISTOL | A rating |
| Flourish Childrens Services Limited | Huddersfield | A rating |
| Flourish Craft Bakery Ltd | Watford | A rating |
| Flourish Day Nursery Ltd | Esher | A rating |
| Flourish Healthcare and Support | Sheffield | A rating |
| Flourish Learning | Liverpool | A rating |
| Flourishgate Care Services Ltd | Barking | A rating |
| Flourishlife care ltd | Manchester | A rating |
| Flow Commerce UK Ltd | London | A rating |
| FLOW CONTROLS UK LIMITED | BOLTON | A rating |
| Flow Healthcare Services Ltd | Derby | A rating |
| FLOW HEALTHCARE. LTD | Epsom | A rating |
| Flow Hospitality Training Limited | Edinburgh | A rating |
| Flow Neuroscience Ltd | London | A rating |
| Flow Traders UK Services Ltd | London | A rating |
| Flow&Ebb Limited | London | A rating |
| FLOW2GROW LTD | London | A rating |
| Flowan Health Ltd | London | A rating |
| Flowbird Ltd | Ashford | A rating |
| Flowcopter Ltd | Loanhead | A rating |
| Flowdesk UK Ltd | London | A rating |
| Flower & White Ltd | Telford | A rating |
| Flower Corner Limited | London | A rating |
| FLOWER LABS CAMBRIDGE LTD | LONDON | A rating |
| flower pack ltd | NEWCASTLE UNDER LYME | A rating |
| Flower Place Limited | Manchester | A rating |
| Flower Pot Hotel | Henley On Thames | A rating |
| Flower Thai Massage, Beauty & Retail Hornchurch Ltd T/A Flower Thai Massage | London | A rating |
| Flowers Plants Gifts Limited | London | A rating |
| FLOWERTOUR LIMITED | LONDON | A rating |
| Flowgistix Limited | Bradford | A rating |
| Flowgreens Limited | Hinckley | A rating |
| Flowhouse Ltd t/a The Elephant | Chorley | A rating |
| FLOWIFY HEATING LTD | Romford | A rating |
| Flowla Ltd | London | A rating |
| FLOWMADE ENTERPRISES LIMITED | London | A rating |
| Flowmax Ltd | Aylesbury | A rating |
| FLOWPLANT GROUP LTD | SALISBURY | A rating |
| Flowserve GB Limited | Newark | A rating |
| Flowtec Solutions Ltd | Sutton Coldfield | A rating |
| FLOWTECH MECHANICAL SERVICES LTD | London | A rating |
| Flox Limited | London | A rating |
| Floyd Slaski Architects Ltd | London | A rating |
| Floyd Zadkovich LLP | London | A rating |
| FLSmidth UK Limited | Altrincham | A rating |
| FLTRP (UK) LIMITED | Oxford | A rating |
| Fluence Energy UK Limited | London | A rating |
| Fluence World Ltd | London | A rating |
| Fluent Image Ltd | London | A rating |
| Fluent Interaction Limited | London | A rating |
| Fluent Studio Ltd | London | A rating |
| Fluent2 Limited | London | A rating |
| Fluenta Solutions Ltd | St Neots | A rating |
| FLUF Ltd | London | A rating |
| Fluffy Fluffy | Leicester | A rating |
| Fluffy Fox Studios Limited | Leicester | A rating |
| Fluiconnecto UK Ltd | Manchester | A rating |
| FLUID DIGITAAL IDEAS | Darley Abbey | A rating |
| Fluid Pub Group Limited T/A The White Swan | Richmond | A rating |
| Fluidmaster GB Ltd | Hereford | A rating |
| FluidOne | London | A rating |
| Fluidstack Ltd | London | A rating |
| Fluke (UK) Limited | Norwich | A rating |
| Fluor Limited | Farnborough | A rating |
| Fluoro Limited | London | A rating |
| Fluorocarbon Limited | Irlam | A rating |
| Fluorochem Ltd | Hadfield | A rating |
| FluoRok Limited | Oxford | A rating |
| Fluro Platform Limited | London | A rating |
| Flusso Ltd | Cambridge | A rating |
| Flutter Labs AI Ltd | London | A rating |
| Flutterlab Ltd | London | A rating |
| Flutterwave UK Limited | Hackney | A rating |
| Flux Corp Ltd | London | A rating |
| FluxSys Limited | Wellesbourne | A rating |
| Fluxx Limited | London | A rating |