| Bookyup.com LTD | Birmingham | A rating |
| BOOMA RESTAURANTS LIMITED | London | A rating |
| Boomer Industries Ltd. | Lisburn | A rating |
| Boomerang Digital Ltd | Hessle | A rating |
| BOOMERANG HEALTHCARE LIMITED | GATESHEAD | A rating |
| Boomerang I-Comms Limited | London | A rating |
| Boomi Corporation Limited | London | A rating |
| Booming Games (UK) Limited | Liecester | A rating |
| BOOMSATSUMA EDUCATION LIMITED | Bristol | A rating |
| Boomtown Festival UK Ltd | Bristol | A rating |
| Boon N Bless Limited | London | A rating |
| BOONNAK THAI RESTAURANT | BLACKPOOL | A rating |
| Boost & Co Limited | London | A rating |
| Boost AI LTD | Woking | A rating |
| Boost Capital Advisers Limited | London | A rating |
| Boost It Technologies LTD | Bristol | A rating |
| BOOST PHYSIO Ltd | Hendon | A rating |
| Boostworks People Engagement Limited | WHEATLEY | A rating |
| BOOTEND STORE LTD | Bagillt | A rating |
| Booth King Partnership Ltd | Ramsbottom | A rating |
| BOOTH WELSH AUTOMATION LIMITED | Irvine | A rating |
| Booths Stonemasonry & Masonry Conservation Ltd | Aubourn | A rating |
| Boothstown Medical Centre | Manchester | A rating |
| Bootle Village Surgery | Liverpool | A rating |
| Bootleg Films Limited | London | A rating |
| Boots Hearingcare | Llandudno | A rating |
| Boots Management Services | Nottingham | A rating |
| Boots Opticians | Rayleigh | A rating |
| BOOZ ALLEN HAMILTON INTERNATIONAL (U.K.) LTD | Huntingdon | A rating |
| Booze & Essential Putney Ltd | London | A rating |
| BOOZE & VAPE LTD | Stockport | A rating |
| Booze and News | Wrexham | A rating |
| Booze Basement Ltd | Heywood | A rating |
| Booze Bros Limited | Bath | A rating |
| BOOZE CITY | Northampton | A rating |
| BOOZE DELIVERY LIMITED | London | A rating |
| BOOZE EXPRESS LTD | CRAWLEY | A rating |
| Booze Lichfield Ltd | Lichfield | A rating |
| Booze Master | Liverpool | A rating |
| BOOZE N NEWS STORE LTD | LEEDS | A rating |
| Booze Parade Limited | Hull | A rating |
| Booze Stop Convenience T/A VA Convenience | Walsall | A rating |
| BOOZE, DRINK, RUNNERS LTD | Wembley | A rating |
| Booze247 Limited | Tonypandy | A rating |
| BOOZY BUSTERS STORE LTD | Manchester | A rating |
| BoPubCo | London | A rating |
| BORA BORA LIMITED | York | A rating |
| Bora Health Limited | Liverpool | A rating |
| BORA TRAVEL CO LTD | NEW MALDEN | A rating |
| Boralex Ltd | Ringwood | A rating |
| BORAN SUPERMARKET LIMITED | London | A rating |
| BoranMopack Limited | Strabane | A rating |
| BORDARS SUPERSTORE LIMITED | Hanwell | A rating |
| Bordeaux Index Limited | London | A rating |
| Bordelle Ltd | London | A rating |
| Border Business Systems Limited | Wrexham | A rating |
| Border Crossings | London | A rating |
| BORDERLESS TEK LTD | Birmingham | A rating |
| Borderline Pictures Limited | London | A rating |
| Borders Orthodontics Ltd | Galashiels | A rating |
| Bordon HILL Nurseries Limited | Banbury | A rating |
| Boreal IM Limited | London | A rating |
| Borealis Maritime Limited | London | A rating |
| Boreas Contracts Ltd | Grimsby | A rating |
| BOREAS SOFTWARE AND CONSULTING LTD | London | A rating |
| BOREHAMWOOD TRADING LTD | HERTSMERE | A rating |
| BOREHAMWOOD TRADING LTD T/A SABABA | HERTFORDSHIRE | A rating |
| Borer Data Systems Ltd | Winnersh | A rating |
| BORG AUTOMOTIVE | WEST MIDLANDS | A rating |
| Borg Pharma Limited | Surrey | A rating |
| Borghetto Ltd trading as Osteria Pulcinella | Twickenham | A rating |
| BorgWarner Ltd | Bradford | A rating |
| BORING MARKETING LTD | London | A rating |
| BORIS SOFTWARE LIMITED | LEEDS | A rating |
| BORIUM STUDIO LIMITED | Chessington | A rating |
| Borivali Consultancy Limited | Milton Keynes | A rating |
| BORJAN LTD | Oxford | A rating |
| Borkowski | London | A rating |
| BORLAKHA SPICE LIMITED T/A Sundarban | Littlehampton | A rating |
| Borlase Henley Ltd | Henley-On-Thames | A rating |
| Borletti Management Limited | London | A rating |
| Borlyte Limited | Aberdeen | A rating |
| Born Capital Ltd | London | A rating |
| Born Social Limited | London | A rating |
| borne agency Ltd | Norwich | A rating |
| Borne Resourcing Limited | London | A rating |
| BORNEL CARE LIMITED | Exeter | A rating |
| Bornoa Limited | London | A rating |
| BORO PROTECT SECURITY LTD | Middlesbrough | A rating |
| Boro Travels LTD | Middlesbrough | A rating |
| Borough 22 Limited | London | A rating |
| Borough Care Limited | Stockport | A rating |
| Borough Kitchen Limited | London | A rating |
| Borough Nuts Ltd | London | A rating |
| BOROUGH SE1 LTD | London | A rating |
| Boroughbridge Vets Ltd | York | A rating |
| Boroughbury Medical Centre | Peterborough | A rating |
| Boroughloch Medical Practice | Edinburgh | A rating |
| Boroughmuir Limited | EDINBURGH | A rating |
| Boroughmuir Rugby Community and Sports Club | EDINBURGH | A rating |
| Borr Drilling Land Support Limited | Westhill | A rating |
| Borregaard UK Ltd | Warrington | A rating |
| Borshch Ltd | Birmingham | A rating |
| Borshtch N Tears | London | A rating |
| Borstal Village Surgery | Rochester | A rating |
| Borth Pharmacy Ltd | Borth | A rating |
| Borth Surgery | Borth | A rating |
| Bortstein Services UK LLP | London | A rating |
| Borwood Limited | London | A rating |
| BOS Aerospace Ltd | Wilmslow | A rating |
| BOS Wealth Management Europe S.A. | London | A rating |
| Bosch Global Associates Ltd | Ashford | A rating |
| Bosch Global Software Technologies Private Limited | Denham | A rating |
| Bosch Lawn & Garden Limited | Stowmarket | A rating |
| Bosch Rexroth Limited | St Neots | A rating |
| Bosch Thermotechnology Ltd | Worcester | A rating |
| Bosco Bath Ltd | Bath | A rating |
| Bosco Catholic Education Trust | Bognor Regis | A rating |
| Bosco Cheltenham Ltd | Cheltenham | A rating |
| Bosco Dental Studio | Dalkeith | A rating |
| Boscombe Precinct Post office | Bournemouth | A rating |
| Boscombe Visionplus Ltd. | Bournemouth | A rating |
| BOSE EDUTECH LIMITED | Birmingham | A rating |
| Bose Limited | London | A rating |
| BOSE TECHNOLOGIES LIMITED | Reading | A rating |
| BOSeCO | London | A rating |
| Bosi Pubs Limited | Ludlow | A rating |
| Bosideng Retail Ltd | London | A rating |
| Boskalis Subsea Limited | Billingham | A rating |
| Boskalis Subsea Services Limited | Aberdeen | A rating |
| Boskalis Westminster Ltd | Fareham | A rating |
| Boskos Foods Ltd | Northampton | A rating |
| Boslan Engineering Limited | Cambridge | A rating |
| Bosmere Medical Practice | Havant | A rating |
| Bosphorus Legal Gateway (UK) Ltd | London | A rating |
| Boss Agencies Limited | Manchester | A rating |
| BOSS BARBERSHOP LIMITED | Ilford | A rating |
| Boss Cabins Limited | Bourne | A rating |
| Boss Co News | Brighton | A rating |
| Boss Consulting Services Limited | London | A rating |
| Boss Design Group | Dudley | A rating |
| BOSS Energy Consulting Limited | London | A rating |
| Boss Man Booze | Eastbourne | A rating |
| BOSS MOTORS LTD | BLACKBURN | A rating |
| BOSS Professional Services | 1-3 Brixton Road | A rating |
| BOSS TRADERS LIMITED T/A Genie Laundry & Dry Cleaners | Manchester | A rating |
| Bossa Studios | London | A rating |
| BOSSMAN'S RETAIL MALVERN LTD | Malvern | A rating |
| Bossmans Retail Moatway Ltd t/a Moat Way Select & Save | Malvern | A rating |
| Bossmans Retail Abergavenny Ltd | Abergavenny | A rating |
| Bossmans Retail Fairfield Ltd t/a Fairfield Stores - Premier | Evesham | A rating |
| Bossmans Retail Ltd | Herefordshire | A rating |
| BOSSS (UK) Limited | Gerrards Cross | A rating |
| Boster Group Limited | London | A rating |
| BOSTICO INTERNATIONAL LTD | BOURNEMOUTH | A rating |
| Bostik Ltd | Stafford | A rating |
| Bostock Bakery | East Linton | A rating |
| Boston Accountancy Ltd | Dagenham | A rating |
| Boston College | Boston | A rating |
| BOSTON CRICKET CLUB | BOSTON | A rating |
| BOSTON EXPRESS ENTERPRISES LTD | Wembley | A rating |
| Boston Grammar School | Boston | A rating |
| Boston House Business Centre Ltd | Brentford | A rating |
| Boston Limited | St Albans | A rating |
| Boston Manor Hotel | London | A rating |
| Boston Partners (UK) Limited | London | A rating |
| Boston Scientific Limited | Hemel Hempstead | A rating |
| Boston Specsavers Hearcare Limited | Boston | A rating |
| Boston Supermarket LTD | Boston | A rating |
| Boston Visionplus Ltd | Boston | A rating |
| Bostonair Group Ltd | Beverley | A rating |
| BOSTONMOBILE PHONE LIMITED | Boston | A rating |
| Bosun Care Ltd | Gloucester | A rating |
| Bosver Ltd | Bracknell | A rating |
| Bosville Limited | London | A rating |
| BOSWALL PO-NEWSAGENTS LIMITED | EDINBURGH | A rating |
| Bosworth Care Home | Weymouth | A rating |
| BOSWORTH DENTAL LIMITED | NUNEATON | A rating |
| BOTA'S TRANSPORT LTD. | Livingston | A rating |
| Botanic Gardens Conservation International | Richmond | A rating |
| Botanic Wellness (UK) Ltd | London | A rating |
| Botanical Lounge | Colwyn Bay | A rating |
| BOTANICO WOOLTON LIMITED | LIVERPOOL | A rating |
| BOTANICOIR LTD | LONDON | A rating |
| Botany Bay Asset Management Limited | London | A rating |
| BOTANY FOODIE LIMITED | Cambridge | A rating |
| BOTANY HOUSE LIMITED | Oldham | A rating |
| Both Bright Croydon Ltd T/A Oodles | Croydon | A rating |
| Both Bright Ltd | Northolt | A rating |
| Bothwells Ltd T/A Parkview Nursing Home | Swindon | A rating |
| Bothy Bistro Burghead Ltd | Elgin | A rating |
| Botify Limited | London | A rating |
| Botley Hill Hospitality LTD | Warlingham | A rating |
| Botswana High Commission | London | A rating |
| Bott and Co Solicitors Ltd | Wilmslow | A rating |
| Bott Limited | Bude | A rating |
| Bottega Montalbano Ltd T/A Bottega Montalbano | Tenterden | A rating |
| Bottega Wines Ltd | London | A rating |
| Botteginos Limited | Bristol | A rating |
| BOTTLE & BREW LIMITED T/A WV10 LOCAL | WOLVERHAMPTON | A rating |