| Big Orange Software trading as Sonin | Reigate | A rating |
| BIG Partners Ltd | London | A rating |
| BIG PICTURE (SOFTWARE) LIMITED | Snaith | A rating |
| Big Picture Medical Limited | London | A rating |
| Big Portion International Location Caterers Limited | Slough | A rating |
| BIG RED FEET LTD. | LONDON | A rating |
| Big Red House Services Limited | London | A rating |
| Big Red Industries Group LTD | Huddersfield | A rating |
| Big Sam Ltd | South Glamorgan | A rating |
| Big Saver Limited | Manchester | A rating |
| BIG SHELF PRIVATE LIMITED | Galsgow | A rating |
| Big Slope | Glasgow | A rating |
| Big Stack Ltd | Wooburn Green | A rating |
| Big Student House Ltd | Brighton | A rating |
| BIG T'S CHIPPY LTD | Birmingham | A rating |
| Big Wave Media Ltd | Exeter | A rating |
| Big Win Philanthropy | London | A rating |
| Bigbe Foodie Ltd | Leyton | A rating |
| Bigbell Limited | Banbury | A rating |
| BigBen Design Limited | Hounslow | A rating |
| BIGBUK LIMITED T/A EGGFREE CAKEBOX | STOKE-ON-TRENT | A rating |
| BigChange Limited | Leeds | A rating |
| Bigdale Ltd | Liverpool | A rating |
| BigDug Limited | Gloucester | A rating |
| Bigeye Security Ltd | Hounslow | A rating |
| BIGFOOT INTERNATIONAL EDUCATION LTD | London | A rating |
| BiGGAR Economics Limited | Edinburgh | A rating |
| Bigger Boat Group | Salford | A rating |
| BIGGER BOAT GROUP LIMITED | Manchester | A rating |
| BIGGIN STREET GENERAL STORE LTD | Dover | A rating |
| BIGGLES RESTAURANT & TAKEAWAY LTD T/AS BIGGLES LOUNGE | Biggleswade | A rating |
| Biggs Beit Ltd TA Biggs Healthcare | DUNSTABLE | A rating |
| Bighams Ltd | Park Royal | A rating |
| Bighand Limited | London | A rating |
| Bigland Accident Repair Centre Limited | London | A rating |
| Bigland Grocers and Meat Ltd T/A Surma Town | London | A rating |
| BIGLAND MOTORS LTD | London | A rating |
| Biglight Limited | London | A rating |
| BIGMANTRA LTD | Woking | A rating |
| Bigminds Technology Solutions Limited | Bromley | A rating |
| Bignall End Cricket Club & Miners Welfare Institute | Stoke-on-Trent | A rating |
| BIGSAM GLOBAL LOGISTICS LTD | MANCHESTER | A rating |
| BigSmall TV | London | A rating |
| Bigspark Limited | Nottingham | A rating |
| Bigsunny Services Ltd | Abbeywood, London | A rating |
| BIGTXN LTD | London | A rating |
| Bijaya Ltd t/a Munal Tandoori | London | A rating |
| BIJC Limited | Manston | A rating |
| Bijoy Youth Group | LONDON | A rating |
| BIKALDI LIMITED | London | A rating |
| Bikano Foods Ltd | Bath | A rating |
| BIKAR AEROSPACE METALS LIMITED | Bristol | A rating |
| BIKERBNB LIMITED | Inverness | A rating |
| BIKERGEARZ LTD | Liecester | A rating |
| Bikerswear Bham Ltd | Birmingham | A rating |
| BIKESOUP LIMITED | London | A rating |
| Bikeworks | LONDON | A rating |
| Bikur Cholim Ltd | London | A rating |
| Bilal Foods London Ltd | London | A rating |
| Bilal Hassan T/A Legalex Solicitors | Ilford | A rating |
| Bilal Superstore Cheadle Ltd | Stockport | A rating |
| BILASH RESTAURANT & TAKEAWAY LIMITED | Lichfield | A rating |
| BILASH SPICE | Burton upon Trent | A rating |
| BILBERRY TECHNOLOGIES LTD T/A ADCLEAR | London | A rating |
| BILBOROUGH CONVENIENCE STORE LIMITED | NOTTINGHAMSHIRE | A rating |
| BILBROOK GROCERS LIMITED | Wolverhampton | A rating |
| Bilbrook Medical Centre | Wolverhampton | A rating |
| Bilderlings Pay Limited | London | A rating |
| Bilendi Limited | London | A rating |
| Bilfinger Piping Technologies UK Ltd | Bristol | A rating |
| Bilfinger UK Limited | Birchwood | A rating |
| BILGIN CONSULTANCY LTD | London | A rating |
| BILGIN STEEL LIMITED | LONDON | A rating |
| BILI MANAGEMENT (UK) LIMITED | London | A rating |
| Bilingual Beats Ltd. | London | A rating |
| Bilingual Day Nursery & Pre-School | Ashby de la Zouch | A rating |
| Bilingual Primary School Trust Limited | Hove | A rating |
| Biliv Care Ltd | Birmingham | A rating |
| Bill House Properties Limited | West Bromwich | A rating |
| Bill Kenwright Ltd | London | A rating |
| Bill or Beak Limited | London | A rating |
| BILL'S BEERS LIMITED | London | A rating |
| Bill's Restaurants Ltd | London | A rating |
| BILLA SCAFFOLDING LTD | LONDON | A rating |
| Billcole Haulage (Stevenage) Limited | Earith | A rating |
| Billericay Cricket Club | Billericay | A rating |
| Billericay Phones & Gadgets Ltd | London | A rating |
| Billers Local Ltd | Billericay | A rating |
| BILLESLEY MANOR HOTEL LIMITED | ALCHESTER, STRATFORD-UPON-AVON | A rating |
| Billi Smiles Entertainment Limited | Crewe | A rating |
| Billie Jean King Cup Limited | London | A rating |
| Billigence Europe Limited | London | A rating |
| Billing Service Station Ltd | Milton Keynes | A rating |
| BILLINGBEAR PROPERTY MANAGEMENT LIMITED | London | A rating |
| BILLINGE DISCOUNT LTD | Wigan | A rating |
| BILLINGE NEWSAGENT LTD | Wigan | A rating |
| BILLINGHAM FOODS LTD | Billingham | A rating |
| Billingham Synthonia Cricket Club | Billingham | A rating |
| BILLINGSGATE FRESH FISH LTD | London | A rating |
| Billington Carers Ltd | Hedge End | A rating |
| Billington Structures Ltd | Barnsley | A rating |
| Billion Dollar Boy Limited | London | A rating |
| Billion Global Chase Ltd | London | A rating |
| BILLIONCARE LTD | Bromley | A rating |
| Billions Europe Ltd | Stockon-on-tees | A rating |
| Billionz Lounge Ltd | Nottingham | A rating |
| Billman Ltd | Canterbury | A rating |
| Billon Financial Ltd | London | A rating |
| Billu Traders Ltd | Essex | A rating |
| Billups Limited | London | A rating |
| Billy Basin Ltd | London | A rating |
| Billy Bob's Parlour Ltd | Skipton | A rating |
| Billy Concrete Services Limited | Southampton | A rating |
| Billy Nelson Boxing Limited | Airdrie | A rating |
| BILLY'S FISH BAR (P P) LTD | Leicester | A rating |
| BILLY'S J LTD | ROTHERHAM | A rating |
| BILLYS GOLDEN FISH & CHIPS LTD | Jarrow | A rating |
| BILSTON BALTI (WM) LTD (Trading as Bilston Balti) | Wolverhampton | A rating |
| Bilston Drinks Stop | Wolverhampton | A rating |
| Bilston Motors Ltd | Birmingham | A rating |
| BILTON FOOD & WINE LTD T/A Londis | Perivale | A rating |
| Bilton Medical Centre | BRADFORD | A rating |
| Bilton Pharmacy | Bilton | A rating |
| Bilton Store | Hull | A rating |
| BILTONABBEY LIMITED | London | A rating |
| Bilwani Trading Company Limited | Stone | A rating |
| BILYANA GOLF (UK) LTD | Macclesfield | A rating |
| Bilz Tool Ltd. | Coventry | A rating |
| BIM DEPARTMENT LTD | Halifax | A rating |
| BIM Technologies (Europe) Limited | Newcastle upon Tyne | A rating |
| BIM United Kingdom Ltd | Bolton | A rating |
| BIM Yorkshire Ltd | Bardsey | A rating |
| BIM'S RESTAURANTS LTD t/a BIM'S | Ilford | A rating |
| BIMAN BANGLADESH AIRLINES | LONDON | A rating |
| BIMBox Associates Ltd | Manchester | A rating |
| Bimisa Patel T/a Southgate Physio | London | A rating |
| Bimmarc Limited Trading As 99 VietMart | Cardiff | A rating |
| Bims Edmonton Ltd | London | A rating |
| Bims Walthamstow Ltd | London | A rating |
| BIMTech Engineering Limited | Manchester | A rating |
| BIMTek Limited | Midsomer Norton | A rating |
| BIN KHALID ONLINE LTD | Glasgow | A rating |
| BIN-SEENA HEALTHCARE LTD | LONDON | A rating |
| BINA SERVICES LIMITED | Northampton | A rating |
| Binance Europe Limited | London | A rating |
| Binape Elevators Uk Ltd | London | A rating |
| BINARY BUSINESS ADVISOR LIMITED | London | A rating |
| Binary IS Limited | Harrogate | A rating |
| Binary Professions Limited | Barking | A rating |
| Binary10 Ltd | Swindon | A rating |
| Binas solicitors | Manchester | A rating |
| Binayak Enterprise Limited | Southend | A rating |
| Binbay London Ltd | London | A rating |
| BINBOGA LTD | ILFORD | A rating |
| BINCLOUD CONSTRUCTION LTD | London | A rating |
| BIND MEDIA LTD | Bristol | A rating |
| Bind Research | London | A rating |
| BINDERHOLZ UK LTD | EGLWYS NUNYDD | A rating |
| BINDETHICS LTD | Leeds | A rating |
| Binding Solutions Limited | Middlesbrough | A rating |
| Bindiya Limited | Manchester | A rating |
| Bindmans LLP | London | A rating |
| BING BING FOODS LIMITED | WINCHESTER | A rating |
| BING CAPITAL PARTNERS LTD | England | A rating |
| BINGHAM FARM PARTNERSHIP | Crumlin | A rating |
| Bingham Riverhouse | Richmond | A rating |
| BINGI'S KITCHEN LTD | BELFAST | A rating |
| BINIYOUGBARTA LIMITED | London | A rating |
| Binks UK Limited | Bournemouth | A rating |
| Binley Solid Surface Limited | Coventry | A rating |
| BINLEY WOODS SERVICE CENTRES LIMITED | COVENTRY | A rating |
| binning wine mart limited t/a the auction house | luton | A rating |
| BINODINI LIMITED | Bedford | A rating |
| BINOY INDIAN LTD | Windsor | A rating |
| BinSina Limited | Harrow | A rating |
| BINSOLS (GB) LIMITED | Feltham | A rating |
| BINSUN LTD | Leeds | A rating |
| Bintel Ltd | Dagenham | A rating |
| Binti International | Weybridge | A rating |
| Binyan Studios Limited | London | A rating |
| Bio Capital Ltd | Buntingford | A rating |
| Bio Dynamics Tanks Ltd | Thurnscoe | A rating |
| Bio Laboratories Ltd | Altrincham | A rating |
| Bio Luminuex Health Care Limited | LONDON | A rating |
| Bio Products Laboratory Limited | Elstree | A rating |
| Bio Products Validation Limited | Crawley | A rating |
| BIO-ICON LIMITED | Leicester | A rating |
| Bio-Logic Science Instruments ltd | Derbyshire | A rating |
| Bio-Rad Laboratories Ltd | Watford | A rating |
| BIO-TECH SOLUTIONS LIMITED | Driffield | A rating |
| Bio-Techne Ltd | Abingdon | A rating |
| Bioactive Pharma Ltd | Chichester | A rating |
| Bioascent Discovery Limited | Motherwell | A rating |
| Biocatalysts Limited | Cardiff | A rating |
| BIOCLAVIS LTD | CLYDEBANK | A rating |
| Biocomposites Limited | Newcastle | A rating |
| Biocon Pharma UK Limited | London | A rating |
| BioConstruct NewEnergy Ltd | London | A rating |
| BioCorteX Ltd | London | A rating |
| Biocrucible Ltd | Cambridge | A rating |