| F & A CONVENIENCE STORES LTD | WORCESTER | A rating |
| F & F CAKES LTD | London | A rating |
| F & F DISTRIBUTION LTD | London | A rating |
| F & F Estates Ltd | Manchester | A rating |
| F & F Stores Ltd | Milton Keynes | A rating |
| F & F SURBITON LTN LTD | Surbiton | A rating |
| F & H Transport Limited | London | A rating |
| F & I Online Ltd t/as Carplus | Borehamwood | A rating |
| F & J CURRY LIMITED T/A The Bengal | Loughton | A rating |
| F & J DESIGN LIMITED | BRADFORD | A rating |
| F & Q CATERING BRISTOL LIMITED | Bristol | A rating |
| F & R Enterprise Ltd | Bucks | A rating |
| F & W Networks Ltd | London | A rating |
| F & Z INVESTMENT LTD | LEICESTER | A rating |
| F &N PRIVATE LIMITED | MANCHESTER | A rating |
| F A ENGINEERING LTD | ILFORD | A rating |
| F A Firman (Glass Projects) Limited | Romford | A rating |
| F A PRO LTD | Luton | A rating |
| F A RETAILING LTD | Coventry | A rating |
| F AND K CATERING LIMITED T/A MORITIMER CAFE | READING | A rating |
| F and M services and repairs ltd | Grays | A rating |
| F B F X Ltd | Feltham | A rating |
| F B(DOWNHAM) LTD. T/As ASHGROVE PHARMACY | Bristol | A rating |
| F Bender Ltd | Wrexham | A rating |
| F Bousis limited | Edinburgh | A rating |
| F Brazil Reinforcements Ltd | Canvey Island | A rating |
| F Brothers Ltd T/A Indian Greedy Cow Ltd | London | A rating |
| F C Brown (Steel Equipment) Limited | Newport | A rating |
| F E Metcalfe & Co Ltd | Ripon | A rating |
| F F AND J ENTERPRISES LIMITED | London | A rating |
| F G CARS LTD | Loughborough | A rating |
| F H Bertling Logistics Aberdeen Ltd | Bucksburn | A rating |
| F Health LTD | Manchester | A rating |
| F LONDON FLOORING LTD | Ilford | A rating |
| F M J PROPERTY SERVICES LIMITED | LONDON | A rating |
| F Network Holdings UK Limited | London | A rating |
| F P Smith Holdings (Newark Avenue) Ltd | Peterborough | A rating |
| F Parr Limited | Redditch | A rating |
| F R Chaudry Trading As The Dental Practice | London | A rating |
| F R H Fast Food Ltd | Walsall | A rating |
| F R S FASTFOOD LTD | Chorley | A rating |
| F Redfern and Sons Ltd | Buxton | A rating |
| F RESTAURANTS LIMITED TA FOR THE SAINTS | Cheltenham | A rating |
| F Schumacher & Co UK Ltd | Chelsea Harbour, London | A rating |
| F Studio London Ltd | London | A rating |
| F Wahid LTD | Wakefield | A rating |
| F Winter & Co LLP | London | A rating |
| F-M Motorparts Limited | Manchester | A rating |
| F-Prime Inc (UK branch) | London | A rating |
| F-Secure (UK) Limited | Gerrards Cross | A rating |
| F. B. Ellmer Limited | London | A rating |
| F. INITIATIVES LIMITED | London | A rating |
| F. KLUCZNIK & SON LIMITED | Stoke-on-Trent | A rating |
| F. List UK LTD. | Kent | A rating |
| F. R. Bradley (Feltham) Limited | Feltham | A rating |
| F. SCHUMACHER & CO. UK LTD | London | A rating |
| F.A.B Retail Limited | London | A rating |
| F.B.E Associates Limited T/A Franky Bollywood | Middlesex | A rating |
| F.C.L. FROZENS MANCHESTER LIMITED | Salford | A rating |
| F.G. Oils | Leeds | A rating |
| F.G.BREWER & SONS (FARMS) LIMITED | St Columb | A rating |
| F.G.S. Transport Limited | Wolverhampton | A rating |
| F.H.G.TRADERS LIMITED | East Kilbride | A rating |
| F.J. Booth Construction Limited | Gainsborough | A rating |
| F.Morelli Ltd | Bedfordshire | A rating |
| F.P.T. Industries Ltd | Portsmouth | A rating |
| F.R.E.D.S Timberframe Limited | Swansea | A rating |
| F/CE. LONDON LAB LTD | London | A rating |
| F&A BASRY LTD | ROTHERHAM | A rating |
| F&A Care and support services Ltd | PORTSMOUTH | A rating |
| F&A FRUITS LTD | London | A rating |
| F&A Supported Living Ltd | Gosport | A rating |
| F&E RETAIL LTD | EH9 1SS | A rating |
| F&F HOMES LONDON LTD | London | A rating |
| F&H Enterprise (Colmore) Limited | Birmingham | A rating |
| F&J CONSULTANTS LTD | Ilford | A rating |
| F&M construction | London | A rating |
| F&N REFURBISHMENT LTD | London | A rating |
| F&N SERVICES LIMITED t/a Burgrill | London | A rating |
| F&S COMMUNICATION LTD | Bradford | A rating |
| F&S Taxis Ltd | Huntingdon | A rating |
| F&T DESIGN CONSULTANTS LIMITED | London | A rating |
| F&Z CAP PIZZA LIMITED | Chippenham | A rating |
| F1 Laser Ltd | Nottingham | A rating |
| F18 LTD | LONDON | A rating |
| F2iT Ltd | London | A rating |
| F2X GROUP LIMITED | London | A rating |
| F3 Architects LLP | London | A rating |
| F37 Foundry Ltd | Bolton | A rating |
| F3DM LTD | Southend-On-Sea | A rating |
| F4 Auto Repairs Ltd | Scunthorpe | A rating |
| F4 CONSULTANCY LTD | London | A rating |
| F4VRT UK LTD | Slough | A rating |
| F5 Networks Limited | Chertsey | A rating |
| F50 League GB Ltd | London | A rating |
| F8 IT Solutions Limited | Aylesbury | A rating |
| F8 Networks Limited | Bedford | A rating |
| FA (CKAF) LIMITED T/A SUBWAY | MAIDENHEAD | A rating |
| FA Active Logisitics Ltd | Reading | A rating |
| FA FAST FOODS LTD | ABERDEEN | A rating |
| FA KEBAB AND PIZZA LIMITED | Newport | A rating |
| FA PHARMA CONSULTING LTD | Altrincham | A rating |
| FA PREMIER STORE OLDHAM LTD | OLDHAM | A rating |
| FA-IBI LTD | London | A rating |
| Faaborg Pharma UK Limited | LONDON | A rating |
| Faal International Company Limited | London | A rating |
| Faam Gallery Limited | Twickenham | A rating |
| FAARAH LTD | Newmarket | A rating |
| FAARRZ DEVELOPERS LTD | London | A rating |
| FAAS LTD | Leicester | A rating |
| FAB CAKES LIMITED | LONDON | A rating |
| FAB DJ LTD | LONDON | A rating |
| FAB FINDS LTD | LEICESTER | A rating |
| Fab Inc | London | A rating |
| Fab Pub | LONDON | A rating |
| Fab Signs | Bradford | A rating |
| FAB SNACKS LTD t/a Auntie Anne's | Brighton | A rating |
| Fab Social Care Limited | Alsager | A rating |
| FAB Teeth Ltd | Callington | A rating |
| FAB TRADERS LTD | London | A rating |
| Fab4 Security Ltd | Leeds | A rating |
| Fabacus Services Limited | London | A rating |
| Fabasian Kitchen Limited | Swansea | A rating |
| FABEHA FASHIONS LIMITED | LUTON | A rating |
| Faber and Faber Ltd | London | A rating |
| Faberge (UK) Limited | London | A rating |
| Fabertec Group UK Limited | St Albans | A rating |
| FABIO (SWINDON) LIMITED | SWINDON | A rating |
| Fabio Lavina | Lode | A rating |
| FABKIDS LIMITED | CROYDON | A rating |
| Fable Data Ltd | London | A rating |
| Fabplus Limited | Strabane | A rating |
| Fabpreji ltdT/ASubway | Southend on sea | A rating |
| FABRIC & CRAFT LTD | Bristol | A rating |
| Fabric Beds uk ltd | bradford | A rating |
| Fabric Life Limited | London | A rating |
| Fabric Ventures LLP | London | A rating |
| Fabric Wholesalers Ltd | Bradford | A rating |
| Fabrica Investments Limited T/A Domino's Pizza | Wisbech | A rating |
| FABRICAT IRELAND LTD | DUNGANNON | A rating |
| FabricNano Limited | London | A rating |
| Fabriculture Home Limited | Gloucester | A rating |
| fabrik Limited | Alton | A rating |
| Fabriq Limited | London | A rating |
| Fabrique Ltd | Warwick | A rating |
| Fabrx Limited | London | A rating |
| Fabs Chicken Ltd | Sutton in Ashfiled | A rating |
| Fabs Domiciliary Home Care Ltd | Bromley | A rating |
| FABS FOOD AND WINE LTD | LONDON | A rating |
| FABS GARAGES LTD | Bolton | A rating |
| Fabs Retail Ltd | Atherton | A rating |
| Fabskills Limited | London | A rating |
| Fabulatte Ltd | High Wycombe | B rating |
| FABULOUS DIRECT LTD | Kirkby In Ashfield | A rating |
| Fabulous Fan Fayre | Manchester | A rating |
| Fabulous Homecare LTD | Croydon | A rating |
| Fabulous Partners Limited | Southampton | A rating |
| Fabulous Taste Ltd | Sutton in Ashfield | A rating |
| Fabulous Tots Limited | Kent | A rating |
| Fabulouz Foods Ltd | Birmingham | A rating |
| Fabworth Trading Limited T/A Greywalk | Westfield Stratford City | A rating |
| Facade and Cladding Design Limited | Potters Bar | A rating |
| Faccenda Foods Limited | Brackley | A rating |
| FACCHINI CONSULTING LIMITED | Beverley | A rating |
| Facchini LTD | Birmingham | A rating |
| Facctum Solutions Limited | London | A rating |
| FACE BLANC LTD | Wandsworth | A rating |
| Face Consultants Ltd | Huddersfield | A rating |
| Face Therapy NI Limited | Belfast | A rating |
| FACE THERAPY NI LTD | BELFAST | A rating |
| Facebook Ensure Solutions Ltd | London | A rating |
| Facebook UK | London | A rating |
| Facechoice Limited | Swindon | A rating |
| Facegym Limited | London | A rating |
| FACEPHI BEYOND BIOMETRICS LTD | London | A rating |
| Facepunch Studios Limited | Birmingham | A rating |
| Faces Consent Limited | stafford | A rating |
| Facial Clinic Ltd t/a Eastfield Dental Care | Leicester | A rating |
| Facial Enhancement Suite Ltd | Eccles | A rating |
| Facial Plastic Surgery (UK) Ltd | Tunbridge Wells | A rating |
| Facial Sculpting Ltd | London | A rating |
| Facilitate Care Services Ltd | Coventry | A rating |
| FACILITIES PRO SERVICES LTD | Leicester | A rating |
| Facility Management UK Ltd | Manchester | A rating |
| Facing Heaven Limited | London | A rating |
| Facit Data Systems | Milton Keynes | A rating |
| Facit UK Limited trading as Facit Homes | London | A rating |
| Fact Worldwide Limited | Twickenham | A rating |
| Factal Ltd | London | A rating |
| Factor Law Ltd t/a Factor | Belfast | A rating |
| Factory 33 Ltd | Carterton | A rating |
| Factory Fifteen Limited | LONDON | A rating |
| FACTRA LTD | Manchester | A rating |
| FactSet Europe Limited | London | A rating |
| Facultatieve Technologies Limited | Leeds | A rating |
| FACULTY OF PUBLIC HEALTH OF THE ROYAL COLLEGES OF PHYSICIANS OF THE UNITED KINGDOM | LONDON | A rating |
| Faculty Science Limited | London | A rating |
| Faculty Services Limited | Edinburgh | A rating |
| Fadaat Media | London | A rating |
| Faddy Development Limited | Witham | A rating |