| BRUSCO AND BEE LTD | Edinburgh | A rating |
| Brush Group Limited | Loughborough | A rating |
| Brushstrokes Road Sweepers Ltd | Wolverhampton | A rating |
| Bruton Bond Limited | London | A rating |
| BRUTON CONVENIENCE STORE LTD T/A Bruton Convenience Store | BRUTON | A rating |
| Bruton Lloyd LLP | London | A rating |
| Bruton Pharmacy Limited | Bruton | A rating |
| Bruton School For Girls | Bruton | A rating |
| BRYAN & PARTNERS LTD | London | A rating |
| Bryan Cave Leighton Paisner LLP | London | A rating |
| BRYAN GARNIER & CO. LIMITED | London | A rating |
| Bryan O'Sullivan Studio | London | A rating |
| Bryan Smart | Thirsk | A rating |
| Bryans | Essex | A rating |
| Bryanston Nursery@Marble Arch LTD | London | A rating |
| Bryanston School Incorporated | Blandford | A rating |
| Bryant Artists Ltd | London | A rating |
| Bryant Medical Ltd | Lyne | A rating |
| Bryden Care Ltd | Kidderminster | A rating |
| Bryden Johnson Limited | Croydon | A rating |
| Bryden Wood Ltd | London | A rating |
| Brydg Capital LTD | London | A rating |
| BRYMBO & TANYFRON REGENERATION TRUST | Brymbo Wrexham | A rating |
| Brymore Care Homes Ltd | London | A rating |
| Brympton House Estates Ltd | Yeovil | A rating |
| Bryn Awelon Care Home Ltd | Gwynedd | A rating |
| Bryn Darland Surgery | Wrexham | A rating |
| Bryn Davan Care Ltd | Aberdare | A rating |
| BRYN ILLTYD CARE HOME LTD | Carmarthen | A rating |
| Bryn Yr Haul Nursing Home | Mold | A rating |
| Bryn-Y-Mor Ltd | Amlwch | A rating |
| Bryncethin stores limited | Bridgend | A rating |
| Brynhaulog Limited T/A Sunnybank Care Home | Newport | A rating |
| Brynhyfryd Medical Centre | Swansea | A rating |
| Brynithel Stores Ltd T/A Brynithel Convenience Store | Abertillery | A rating |
| Brynmawr Care Village Ltd | Ebbw Vale | A rating |
| Brynmawr Medical Practice | Ebbw Vale | A rating |
| Brysa Limited | Warrington | A rating |
| Bryson House Ltd | Milton Keynes | A rating |
| Bryter | London | A rating |
| BRYTER Services UK Limited | Holborn | A rating |
| BS AERO SUPPLIES LTD | Keighley | A rating |
| BS Bham 3 Ltd T/A Burger and Sauce | Birmingham | A rating |
| BS Builders and Contractors Limited | Birmingham | A rating |
| BS Care Limited | Havant | A rating |
| BS CARE PROVIDERS LTD | Arnold | A rating |
| BS Derby Limited | Derby | A rating |
| BS FISHBAR LTD T/A BS Fishbar | St. Andrews | A rating |
| BS Food Supplies Ltd | Stanmore | A rating |
| BS KITCHEN & BEDROOM LTD | Hayes | A rating |
| BS MEDIA LTD | LONDON | A rating |
| BS OBENTO LIMITED | BRISTOL | A rating |
| BS Prospect Consultancy Limited | Manchester | A rating |
| BS Saman Ltd | Southampton | A rating |
| BS Solicitors Ltd | Essex, London | A rating |
| BS South West Limited T/as Finch and Associates | Weston Super Mare | A rating |
| BS Tech Solutions Ltd | Manchester | A rating |
| BS UK Shop Front Ltd | Lye Stourbridge | A rating |
| BS VENTURES lIMITED | Harlow | A rating |
| BS WINDOWS LTD | HAYES | A rating |
| BS.AS. Maidstone Ltd T/A Buenos Aires Nights | Maidstone | A rating |
| BS1 Limited T/a Burger and Sauce | Birmingham | A rating |
| BS2 Bham Limited | Birmingham | A rating |
| Bs24 Limited | Camberley | A rating |
| BS4 Limited | Kent | A rating |
| BSA 786 Limited | Rochdalr | A rating |
| BSA Company Limited | Coalville | A rating |
| BSA PROPERTIES & INVESTMENT LIMITED | Hounslow | A rating |
| BSA Tube Runner Ltd | Southampton | A rating |
| BSB AUTOMOTIVE LIMITED | Dartford | A rating |
| BSB Construction Ltd | London | A rating |
| BSBI Consulting Limited | Rickmansworth | A rating |
| BSBL UK Limited | London | A rating |
| BSC Byres Road Ltd T/A Black Sheep Coffee | Glasgow | A rating |
| BSC Food Ltd t/a Chef Wok | Newry | A rating |
| BSCE LTD | Bradford | A rating |
| BSD BUILDING SERVICES LIMITED | Hayes | A rating |
| BSE3D Limited | Haywards Heath | A rating |
| BSG Ecology Ltd | Newport | A rating |
| BSGILL CONSTRUCTION LIMITED | Luton | A rating |
| BSH CONSTRUCTION LTD | London | A rating |
| BSH Home Appliances Ltd | Wolverton | A rating |
| BSHINE HAIR &BEAUTY LTD | Kent | A rating |
| BSI Merch | London | A rating |
| BSIP WALTHAMSTOW FOODS LTS | London | A rating |
| BSJT T/A Bushey Meads School | Bushey | A rating |
| BSK DW Holdings Limited | Duxford | A rating |
| BSK Traders Limited | London, | A rating |
| BSKINNOVATIONS LIMITED | Coventry | A rating |
| BSKT Group Limited | Twickenham | A rating |
| BSL NOW! Ltd | London | A rating |
| BSM AM 2 PM Ltd. | Birmingham | A rating |
| BSM CAMBRIDGE LTD | LONDON | A rating |
| BSM Energy Limited | Cleckheaton | A rating |
| BSM NEWS LTD | London | A rating |
| BSM Retail Traders Ltd | Hartlepool | A rating |
| BSMS LONDON UK LTD | London, England | A rating |
| BSN BUILDERS LIMITED | Oldham | A rating |
| BSO Network Solutions Ltd | London | A rating |
| BSO-FINTAX LIMITED | Feltham | A rating |
| BSOFT TECHNOLOGIES LTD | Wakefield | A rating |
| BSP Pubs Limited TA Pear Tree Inn | Hertfordshire | A rating |
| BSquare Controls Limited | Altrincham | A rating |
| BSQUARE TEXTILE LIMITED | London | A rating |
| BSR Retailers Limited | Blackburn | A rating |
| BSRIA Ltd | Bracknell | A rating |
| BSS & Co (Accountancy Services) LTd | Shifnal | A rating |
| BSS PROPERTY GROUP LTD | Solihull | A rating |
| BSSCM UK LTD | London | A rating |
| Bsset Limited | Derby | A rating |
| BSSG Foods Ltd | Tipton | A rating |
| BSSHSE Ltd T/A British Safety Services | Birmingham | A rating |
| BSSN Foundation | Milton Keynes | A rating |
| BST Consulting Ltd | Dartford | A rating |
| BST Retail Limited | Sheffield | A rating |
| BSU Transport Limited | Wolverhampton | A rating |
| Bsure Limited | Salford | A rating |
| BSW Corporate Limited | Wokingham | A rating |
| BSW Timber Ltd | Earlston | A rating |
| BSWB Limited T/a Burger and Sauce | West Bromwich | A rating |
| BSZI Limited T/A A to Z Insurance Services | Llanelli | A rating |
| BT BELL ASSOCIATES LTD | Hexham | A rating |
| BT FARM LIMITED | Stoke-On-Trent | A rating |
| BT Group | London | A rating |
| BT Pension Scheme Administration Ltd | Chesterfield | A rating |
| BT Pension Scheme Management Limited | London | A rating |
| BT Six Limited T/A Budgens | Gosport | A rating |
| BT45 - THE COLLECTIVE LTD | Magherafelt | A rating |
| BTB Capital LTD t/a Creamy BTB Catering | Morden | A rating |
| BTC CAPITAL MARKETS LTD | London | A rating |
| BTC technical solutions ltd | South Ockendon | A rating |
| BTECH SUPPORT LTD | Bradford | A rating |
| BTECH&CO LTD | Surrey, | A rating |
| BTG Pactual (UK) Limited | London | A rating |
| BTIG Limited | London | A rating |
| BTJ FOODS LTD T/A SHARK TAIL SUSHI | BORNEMOUTH | A rating |
| BTL Group Ltd | Shipley | A rating |
| BTL Industries Ltd. | Stevenage | A rating |
| BTL NETWORK LTD T/a Paytap | London | A rating |
| BTL-UK LTD | ASHFORD | A rating |
| BTLTIMES.COM LTD | London | A rating |
| BTM Group Global (UK) Ltd | London | A rating |
| BTM INTERNATIONAL UK LTD | London | A rating |
| BtoB Events Ltd | Coventry | A rating |
| BTP Consultants | Cheltenham | A rating |
| BTRT Ltd | London | A rating |
| BTS ENGINEERING LTD | Grangemouth | A rating |
| BTS Fabrications Limited | Newton Aycliffe, | A rating |
| BTS in London Limited | London | A rating |
| BTS Property Solutions Ltd | Pinner | A rating |
| BTTC | Manchester | A rating |
| BTU Installation and Maintenance Ltd | Guildford | A rating |
| BTVK Advisory LLP | London | A rating |
| BU Bregal Unternehmerkapital UK Ltd | London | A rating |
| Bubba Hospitality Group Ltd | London | A rating |
| Bubbal Beauty Parlour Ltd | Witney | A rating |
| Bubble and Pho Limited | Portsmouth | A rating |
| Bubble Architects Ltd | London | A rating |
| Bubble IT Solutions Limited | Nottingham | A rating |
| Bubble Ltd | London | A rating |
| Bubble Nation Limited TA Bubble & Scoop | London | A rating |
| Bubble Tea Bullring Ltd T/A Bubbleology | Birmingham | A rating |
| Bubble Tea Glasgow Ltd T/A CUPP | Glasgow | A rating |
| BUBBLE TEALICIOUS COMPANY LTD | Colchester | A rating |
| Bubble Television Group Ltd | London | A rating |
| Bubbleology UK-I Limited | London | A rating |
| Bubbles - Boba Tea Ltd | London | A rating |
| Bubbles Corp Ltd | London | A rating |
| Bubbles Online Services Limited | Alton | A rating |
| BUBBLES SHISHA CAFE LTD T/A BUBBLES SHISHA CAFE | Kingston Upon Thames | A rating |
| BUBBLEWRAP UK LIMITED | London | A rating |
| Bubbly Gems Ltd, T//A, Bubbly Gems Nursery | Sunderland | A rating |
| Bubby Upton LLP | Bury St Edmunds | A rating |
| BUBNEY FARMS LTD | Shropshire | A rating |
| Bubo AI Ltd | Middlesborough | A rating |
| BUCCANEER FUELS LIMITED T/A ESSO | ELGIN, | A rating |
| Bucci Industries UK Limited | London | A rating |
| Buchan Offshore Wind Limited | Glasgow | A rating |
| Buchanan House Care Home | Glasgow | A rating |
| BUCHANAN ORTHOTICS LTD | GLASGOW | A rating |
| Buchananvets Ltd | Altrincham | A rating |
| Buchen-ICS Ltd | Scunthorpe | A rating |
| Bucher Municipal Ltd | Dorking | A rating |
| Bucherer UK Limited | London | A rating |
| BUCHI UK LTD | Newmarket | A rating |
| Buck Consultants Limited | London | A rating |
| BUCKCHI LTD | Oadby | A rating |
| Buckden Dental Clinic | Saint Neots | A rating |
| Buckden Services Ltd | Buckden | A rating |
| Buckfast Abbey | Devon | A rating |
| Buckhurst Hill Cricket Club | Buckhurst Hill | A rating |
| Buckhurst Plant Hire Limited | Waterfoot | A rating |
| Buckingham Dry Cleaners Ltd | London | A rating |
| Buckingham Fort Restaurant Ltd | Buckingham | A rating |
| BUCKINGHAM HOME CARE LTD T/A BUCKINGHAM HOME CARE | BUCKINGHAM | A rating |
| BUCKINGHAM HOTELS GROUP LIMITED | High Wycombe | A rating |
| Buckingham Legal Associates | High Wycombe | A rating |
| Buckingham News | Buckinghamshire | A rating |
| BUCKINGHAM STORES | Buckingham | A rating |
| Buckingham Town Cricket Club | Buckingham | A rating |