| Freston Analytics UK Limited | Ipswich | A rating |
| Freuchen Medical Centre | London | A rating |
| Freuchie Cricket Club | Freuchie | A rating |
| Freud Communications Limited | London | A rating |
| Freudenberg Filtration Technologies UK Ltd | Crewe | A rating |
| Freudenberg Flow Technologies Limited | Port Talbot | A rating |
| Freudenberg Home and Cleaning Solutions Limited | Rochdale | A rating |
| Freudenberg Performance Materials LP | Littleborough | A rating |
| Freudenberg Sealing Technologies Ltd | North Shields | A rating |
| FREXPRESS LIMITED (Trading Name:Chickasso) | NOTTINGHAM | A rating |
| FREYA BIOTECHNOLOGY INTERNATIONAL LIMITED | London | A rating |
| Freyda Limited | Bristol | A rating |
| FREYR LIFE SCIENCES LTD | Berkshire | A rating |
| Freyssinet Limited | Telford | A rating |
| FRGN LTD | nuneaton | A rating |
| FRI CHICKS LTD - T/A Roosters Spot | London | A rating |
| Friar Park Pharmacy | Wednesbury | A rating |
| Friar Servants of Mary | London | A rating |
| Friar Servants of Mary - Province of the Isles | Manchester | A rating |
| Friar Street Dental Practice | Reading | A rating |
| Friarmere CC | Oldham | A rating |
| Friars Lodge Limited | Dunstable | A rating |
| Friars Moor Veterinary Clinic Ltd | Sturminster Newton | A rating |
| Friars Street Dental Ltd | Sudbury | A rating |
| Friarwood Surgery | Pontefract | A rating |
| Friary House Surgery | Plymouth | A rating |
| Friction Marketing Co Ltd | Leighton Buzzard | A rating |
| FRICTIONLESS TECHNOLOGIES LTD | London | A rating |
| FRIDAY CHIPPY & PIZZA LTD | Walsall | A rating |
| Friday Initiatives T/A | London | A rating |
| Friday Nails Limited | London | A rating |
| Fridays (Anlaby) Ltd | Hull | A rating |
| FRIDGE VILLAGE LTD | London | A rating |
| Fried, Frank, Harris, Shriver & Jacobson (London) LLP | London | A rating |
| Friedman Children's Rehabilitation Centre | Eastbourne | A rating |
| Friedrich-Ebert-Stiftung London Office | London | A rating |
| Friend MTS Limited | London | A rating |
| FRIEND PRODUCTIONS LTD | LONDON | A rating |
| FRIEND-FOR-EVER LIMITED | Bath | A rating |
| Friend-James Ltd | Brighton | A rating |
| Friend4Friend Limited | Swindon | A rating |
| Friendly Food City Limited | Cleveland | A rating |
| FRIENDLY SHOPPER (MCR) LTD | Manchester | A rating |
| FriendlySHOP Ltd, | London | A rating |
| FRIENDS AND FRIENDS LTD | London | A rating |
| FRIENDS AUTOS LTD | EVESHAM | A rating |
| Friends Care Limited | Swavesey | A rating |
| FRIENDS CARS LIMITED | Kent, | A rating |
| Friends Choice Limited | Weston Super Mare | A rating |
| FRIENDS CORNER FUNCTION CO-ORDINATORS (UK) LTD | Coventry | A rating |
| Friends Dental Ltd | Norwich | A rating |
| Friends Enterprises World Limited t/a Raeburn News | Edinburgh | A rating |
| FRIENDS FOOD RETAIL LIMITED | Leicester | A rating |
| Friends For All Project | Glasgow | A rating |
| Friends International Ministries | Oxford | A rating |
| Friends Leisure Ltd | Essex | A rating |
| Friends Malayali Asian Store | Worcester | A rating |
| Friends Medical Service Ltd | Lurgan | A rating |
| Friends Mobile Solutions Limited | Taunton | A rating |
| Friends of Conservation | London | A rating |
| Friends Pharmacy Limited | London | A rating |
| FRIENDS STEAK HOUSE LTD | London | A rating |
| Friends Together Care Homes Ltd | Denaby | A rating |
| Friends United Limited T/A Chilis Indian Restaurant | Newbury | A rating |
| Friends United Limited T/A Chilis Indian Restaurant | Reading | A rating |
| Friends World Committee for Consultation | London | A rating |
| FRIENDSHIP CONVENIENCE STORE LTD | Greater Manchester | A rating |
| FRIERN RESIDENTIAL CARE HOME | London | A rating |
| FRIERN SUB LIMITED | London | A rating |
| FriesAndRice Limited T/A Chick N Wingz | Milton Keynes | A rating |
| FrieslandCampina UK Limited | London | A rating |
| FRIEZE EVENTS LIMITED | LONDON | A rating |
| Frimley Health NHS Foundation Trust | Camberley | A rating |
| Frimley Subway Ltd | Frimley | A rating |
| Frimpeks Ltd | Market Harborough | A rating |
| FRINDLE LTD T/A Star wines and foods | Basildon | A rating |
| Fringe Limited | London | A rating |
| frinton on sea cricket club | frinton on sea | A rating |
| Frischmann Process Technology Limited | London | A rating |
| FRITAZZI POLO LIMITED | Maidenhead | A rating |
| FRITECH INNOVATION & MANAGEMENT LIMITED T/A BP | Peterborough | A rating |
| Frixos Metal Works Limited | Enfield | A rating |
| Frixum Limited | London | A rating |
| FRJ TRAVELS LIMITED | London | A rating |
| FRNHZ (BEDFORD) LTD | Bedford | A rating |
| FRNT FINANCIAL UK LIMITED | Farnham | A rating |
| Frobel Independent Services | London | A rating |
| Frocester Cricket Club | Stonehouse | A rating |
| Frog capital Limited | London | A rating |
| Frogchem Limited | Gosport | A rating |
| From Beard to Tail Ltd t/a Little Bat Bar | London | A rating |
| From Bump to Baby Ltd | Templepatrick | A rating |
| FROM SNOUT TO TAIL LIMITED T/A THE HATCH | NEWCASTLE | A rating |
| FROMAGERIE BEILLEVAIRE UK LTD | LONDON | A rating |
| FromCounsel | London | A rating |
| Frome Care Village Limited | Frome | A rating |
| Frome Medical Practice | Frome | A rating |
| Frome Specsavers Limited T/A Specsavers Opticians | Frome | A rating |
| Frome Valley Medical Centre | Bristol | A rating |
| Fromental Ltd | London | A rating |
| FROMM Packaging Ltd | Taplow | A rating |
| Froneri International Limited | Northallerton | A rating |
| Fronhaul and Brookfield Care Home Ltd | Carmarthen | A rating |
| Fronius UK Ltd | Milton Keynes | A rating |
| Front Europe Limited | London | A rating |
| Front Line Genomics Limited | Winchester | A rating |
| FRONT ROW LONDON LIMITED | LONDON | A rating |
| Front Security Ltd | London | A rating |
| Front St. Ltd. | North Shields | A rating |
| Frontal Care Ltd | Huntingdon | A rating |
| Frontdoor Labs Ltd | London | A rating |
| Frontera Consulting UK Ltd | London | A rating |
| Frontera Group Ltd | Sevenoaks | A rating |
| Frontier AI Ltd | London | A rating |
| Frontier Computer Corp Limited | Maidstone | A rating |
| Frontier Developments plc | Cambridge | A rating |
| Frontier Economics | London | A rating |
| FRONTIER GLOBAL CONSULTANTS LTD | Leeds | A rating |
| FRONTIER HEALTH MEDICAL SOLUTIONS LTD | London | A rating |
| Frontier Insurance Solutions Limited | London | A rating |
| Frontier IP Group | Edinburgh | A rating |
| Frontier Learning Trust | Finchley | A rating |
| Frontier MOT Centre Limited | Birmingham | A rating |
| Frontier Pitts Ltd | Crawley | A rating |
| Frontier Protection Worldwid | London | A rating |
| FRONTIER RAAS UK LTD | Southall | A rating |
| Frontier Science (Scotland) Limited | Kincraig | A rating |
| FRONTIER SPACE TECHNOLOGIES LTD | Nottingham | A rating |
| Frontier Strategy UK Limited | London | A rating |
| Frontier Support Services | South Croydon | A rating |
| Frontiera Real Estate Ltd | London | A rating |
| Frontiers | High Wycombe | A rating |
| Frontiers International Ltd | Gloucestershire | A rating |
| Frontiers Media Limited | London | A rating |
| Frontiers meetings limited | Fleet | A rating |
| FRONTIERS SUPERSTORE LTD | Portsmouth | A rating |
| FRONTIVE HOLDING LTD | LONDON | A rating |
| Frontline AIDS | Brighton | A rating |
| Frontline Concrete Solution Limited | Southampton | A rating |
| Frontline Corporate Services Limited | London | A rating |
| FRONTLINE GUARDING UK LTD | Enderby | A rating |
| Frontline Health Professionals Limited | London | A rating |
| Frontline Integrity Ltd | Newcastle Upon Tyne | A rating |
| Frontline Jobs Limited | LONDON | A rating |
| Frontline Nations | Llanelli | A rating |
| FRONTLINE NEWS & MEDIA LIMITED | London | A rating |
| FRONTLINE TECHNOLOGY SERVICES UK LIMITED | Belfast | A rating |
| Frontline Travel and Tours Limited | London | A rating |
| Frontline Travel Ltd T/A Starlight Cars | Walsall | A rating |
| Frontline Ventures Management Company | London | A rating |
| FrontlineFit Performance Centre | Manchester | A rating |
| Frontpark Ltd | Clitheroe | A rating |
| Frontpark Ltd ta the clitheroe pharmacy | Clitheroe | A rating |
| Froo.com Ltd | Brierley Hill | A rating |
| Frost & Sullivan | London | A rating |
| Frostberg Refrigeration Ltd | Surbiton | A rating |
| Froth Distribution Limited | London | A rating |
| Froude Limited | Worcester | A rating |
| Froxy Labs Ltd | London | A rating |
| Froyo Food Ltd | Dagenham | A rating |
| Frozen Brothers Ltd | High Wycombe | A rating |
| Frozen Fast Food Limited | London | A rating |
| FROZEN PLUS (LONDON) LTD | London | A rating |
| FRP Advisory Group PLC | London | A rating |
| FRRESH LIMITED | Walsall | A rating |
| FRS (BIRMINGHAM) LIMITED | Sutton Coldfield | A rating |
| FRS Ventures Limited | Luton | A rating |
| FRSJ LIMITED T/A SIX WAYS SPICE | Cheltenham | A rating |
| FRSNI LTD | Bangor | A rating |
| Fruci Fit Ltd | Marlborough | A rating |
| Frugal Business Services Ltd | London | A rating |
| FRUGAL EMPOWERMENT FOUNDATION | London | A rating |
| Frugalpac Ltd | Ipswich | A rating |
| Fruit Connection | Edinburgh | A rating |
| Fruitcast Limited | LINCOLN | A rating |
| FRUITFIELD SERVICE STATION LIMITED | ARMAGH | A rating |
| Fruitful Insights Limited | Kent | A rating |
| Fruitful Jobs Ltd | Harewood End | A rating |
| FRUITFUL SOFTWARE LIMITED | London | A rating |
| Fruition Properties Limited | London | A rating |
| Fruitlab Media Ltd | Huddersfield | A rating |
| Fruits of the Sea Ltd | Shoeburyness | A rating |
| Fruity Booty | London | A rating |
| Fruity Fresh (Western) Limited, T/A Fruity Fresh Northwood | Northwood | A rating |
| FRUMENTY LTD T/A MOTHER HUBBARD'S FAMOUS FISH & CHIPS (WORCESTER) | WORCESTER | A rating |
| Frutarom UK Limited | Hartlepool | A rating |
| FRV Services Energy UK Limited | Reading | A rating |
| Fry Family Office Limited | London | A rating |
| Fry Feast Foods Limited | Northampton | A rating |
| Fry Station Ltd T/A Fry Station Fish and Chip Shop | Cullompton | A rating |
| FRY-DAYS FISH & CHICKEN LTD | London | A rating |
| FRYDAYZ OF SHILDON LIMITED t/a FRYDAYZ OF SHILDON | Shildon | A rating |
| Fryent Primary School | Kingsbury | A rating |
| Fryer Freemans | Craven Arms | A rating |
| Fryerns Cellar Ltd | Bexley | A rating |
| FRYERNS MEDICAL CENTRE | BASILDON | A rating |
| Frying Squad Limited | Bangor | A rating |
| FS BARRAWAZ UK LTD | HOUNSLOW | A rating |
| FS COMMUNICATION LTD | Cardiff, Wales | A rating |
| FS Construction & Design Ltd | London | A rating |