| Bloor and Co Limited | Sheffield | A rating |
| Bloss ltd | London | A rating |
| Blossom Bargain Shop Ltd T/A Blossom | Manchester | A rating |
| BLOSSOM BEAUTY SALON (PVT) LTD | Cheshire | A rating |
| Blossom Cap LLP | London | A rating |
| Blossom Care Group Limited | Burton-On-Trent | A rating |
| BLOSSOM CHILDREN'S HOMES LIMITED | LONDON | A rating |
| BLOSSOM CONSULTANCY LIMITED | Bromley | A rating |
| Blossom Educare Ltd | Hull | A rating |
| Blossom Educational Limited | Northwood | A rating |
| BLOSSOM ENTERPRISES LTD T/A NISA LOCAL | CHRISTCHURCH | A rating |
| Blossom Forth Multi Concept Limited | Dartford | A rating |
| Blossom healthcare ltd | Maidstone | A rating |
| Blossom Healthcare Solutions Hertfordshire Limited | Stevenage | A rating |
| Blossom High Limited | Rainham | A rating |
| Blossom Home Care Cornwall | Truro | A rating |
| Blossom Homecare Barnet & West Hampstead | London | A rating |
| Blossom House School Limited | New Malden | A rating |
| Blossom Law Solicitors LLP | Ashford | A rating |
| Blossom Scan Limited | Normanby | A rating |
| Blossom Spa | London | A rating |
| Blossom Staffing Ltd | Birkenhead | A rating |
| Blossom Tree Montessori Limited | Northwood | A rating |
| BLOSSOM UK COMMERCIAL LTD | New Malden | A rating |
| Blossom UK Commercial Ltd T/A Moksha | New Malden | A rating |
| Blossom24 Healthcare & Training Ltd | Northampton | A rating |
| Blossomwood | Colchester | A rating |
| Blott.io Ltd | London | A rating |
| Blou Construction Ltd | London | A rating |
| Blow Beauty Ltd | London | A rating |
| BLOW MOULDING TECHNOLOGIES | Belfast | A rating |
| Blowplast Limited | High Wycombe | A rating |
| BLOXD LTD | London | A rating |
| BLS Burnells Limited | Uxbridge | A rating |
| BLS Francos of Longridge Ltd | Preston | A rating |
| BLS Global Ltd | London | A rating |
| BLS INTERNATIONAL SERVICES (UK) Ltd | London | A rating |
| BLTW Care Ltd | Tunbridge Wells | A rating |
| Blu 1 Skip Hire Ltd | Mitcham | A rating |
| BLU BAY LIMITED | GLASGOW | A rating |
| BLU CRAFTS LTD | Leicestershire | A rating |
| Blu Marine Ltd | Southampton | A rating |
| Blu Moon Ltd | London | A rating |
| Blu Wireless Technology Limited | Bristol | A rating |
| blu-3 (UK) Limited | Aylesford | A rating |
| Blu-Sky Care Limited | Wolverhampton | A rating |
| BLUARC WD LTD | Birmingham | A rating |
| Bluark Construction Ltd | Birmingham | A rating |
| Blucare Limited | Edinburgh | A rating |
| BLUDA INDEX LTD | SWINDON | A rating |
| BluDot Digital Limited | Kingsbury | A rating |
| Blue & Co ltd | Worcester | A rating |
| BLUE 6 SERVICEES LIMITED | CHIGWELL | A rating |
| Blue 7 Enterprises Limited | Newport Pagnell | A rating |
| Blue Ace Trading Ltd, | London | A rating |
| BLUE ALPINE PARTNERS LIMITED T/A BLUE ALPINE | London | A rating |
| Blue Angel Care Limited | Kingsclere | A rating |
| Blue Ant International Limited | London | A rating |
| Blue Associates Sportswear Limited | Berkhamsted | A rating |
| Blue Astral Consulting Ltd. | London | A rating |
| BLUE BEANS INC LTD | Patchway | A rating |
| Blue Bear Systems Research Ltd. | OAKLEY | A rating |
| Blue Beck Limited | Macclesfield | A rating |
| Blue Bell Drycleaners Ltd | Amersham | A rating |
| BLUE BELL GURKHA PUB & RESTAURANT LTD | UPTON UPON SEVERN | A rating |
| Blue Bell Pub and Gurkha Restaurant Ltd | Gloucester | A rating |
| Blue Bird Care (Doncaster) | Doncaster | A rating |
| Blue Bottle Leisure Ltd | Southampton | A rating |
| Blue Building Services Ltd | Romford | A rating |
| BLUE BUTTERFLY LIMITED | PINNER | A rating |
| Blue Car Technologies Limited | Wokingham | A rating |
| Blue Check | Wembley, Middlesex | A rating |
| Blue Chilli Thai 2012 Ltd | Mansfield | A rating |
| Blue Chip Technologies Ltd | Wantage | A rating |
| Blue Circle Enterprises Ltd | Tipton | A rating |
| Blue Cloud Global UK Limited | London | A rating |
| BLUE COBRA PORTSMOUTH LTD | PORTSMOUTH | A rating |
| Blue Communication Limited | Oxford | A rating |
| Blue Consulting International Limited T/A Blue Education | London | A rating |
| Blue Coral Healthcare | Sheffield | A rating |
| blue corn bakery ltd | stockton on tees | A rating |
| Blue Cross | Burford | A rating |
| Blue Cross Dental Care | Watford | A rating |
| BLUE CROSS DENTAL PRACTICE | Wolverhampton | A rating |
| BLUE CROSS GROUP LTD | Wembley | A rating |
| Blue Cube (GB) Ltd | London | A rating |
| Blue Dental Laboratory Limited | Crowborough | A rating |
| Blue Diamonds Professional Services Ltd | Birmingham | A rating |
| BLUE DOLPHIN CARE LTD | Derby | A rating |
| Blue Dragon Hillingdon Ltd | Uxbridge | A rating |
| Blue Ducks Food Ltd | Snodland | A rating |
| Blue Earth Capital (UK) Limited | London | A rating |
| Blue Earth Diagnostics Ltd | Oxford | A rating |
| Blue Earth Foods Limited | Redditch | A rating |
| Blue Elephant Indian Cuisine Limited TA Blue Elephant | Telford | A rating |
| Blue Endeavour Limited | Dartford | A rating |
| Blue Eyes UK Enterprises Limited | Wembley | A rating |
| BLUE FIRE AI LIMITED | London | A rating |
| BLUE FIRE SOLUTIONS LTD | Preston | A rating |
| Blue Flame Plumbing & Heating Ltd | Luton | A rating |
| Blue Fountain Care Limited | Bristol | A rating |
| Blue Frog Scientific Limited | Edinburgh | A rating |
| Blue Frontier IT Ltd | Salisbury | A rating |
| Blue Funnel Logistics Ltd | Harrow | A rating |
| Blue Genie Entertainment | Gillingham | A rating |
| Blue Heart Clinics | DUNSTABLE | A rating |
| BLUE HERON CATERING LIMITED T/A BANGALORE EXPRESS | LONDON | A rating |
| Blue Heron Research Partners (UK) Limited | London | A rating |
| BLUE HOMES CARE LIMITED | Ilford | A rating |
| Blue Horizon Asset Management Limited | London | A rating |
| BLUE HORSE CONSTRUCTION LTD | Sunbury on Thames | A rating |
| Blue Horse Group Ltd | Peterborough | A rating |
| BLUE HORSE RETAIL LIMITED | Inkberrow | A rating |
| BLUE HORSE TRANSPORT LIMITED | Slough | A rating |
| Blue house Pharmacy | washington | A rating |
| BLUE ICE CREAM LIMITED | Middlesbrough | A rating |
| Blue Ice Machines LTD | Waltham Abbey | A rating |
| BLUE INC KENT LTD | March | A rating |
| Blue Inn Ltd | Ilford | A rating |
| Blue Kangaroo Happy Nursery | Glasgow | A rating |
| Blue Lagoon (Fish & Chip Shops) Ltd | Glasgow | A rating |
| Blue Lake Solution Ltd | London | A rating |
| BLUE LATAN LIMITED T/A FINT | Leeds | A rating |
| Blue Lemon Cleaning Services Ltd | Kent | A rating |
| Blue Leone LTD | Cambridge | A rating |
| Blue Lid Ltd | Reading | A rating |
| Blue Light Card Limited | Leicester | A rating |
| Blue Light Services Specialist Vehicles | London | A rating |
| Blue Lily Home Care Limited | Harrow | A rating |
| BLUE LINE FOODS LTD | Plymouth | A rating |
| Blue Lion Haulage Limited | Iver | A rating |
| Blue Lotus Healthcare Ltd | Milton Keynes | A rating |
| Blue Mar Limited | Tamworth | A rating |
| Blue Marble Research Limited | Wells | A rating |
| Blue Marine Foundation | London | A rating |
| Blue Marine Travel Ltd | Bishop's Stortford | A rating |
| Blue Marlin Brand Design Limited | Frome | A rating |
| Blue Matter Consulting Ltd | London | A rating |
| Blue Moon (Hammersmith) Limited T/A Holy Cow | London | A rating |
| Blue Moon (Hammersmith) Limited T/A Holy Cow Fine Indian Food | London | A rating |
| Blue Moon Berkshire Ltd T/A Gausia Restaurant & Takeaway | Rainham | A rating |
| Blue Moon Grocery Store Ltd | London | A rating |
| Blue Motor Finance Ltd | Sevenoaks | A rating |
| Blue Mountain Homes Ltd | Derby | A rating |
| Blue Naan Fusion Limited | Felixstowe | A rating |
| Blue Ocean Data Solution Ltd | London | A rating |
| Blue Ocean Plastics & Glazing Limited | Hayes | A rating |
| BLUE OCEAN RESTAURANT | MANCHESTER | A rating |
| Blue Ocean Seafoods Ltd | Coventry | A rating |
| BLUE OCEAN SERVICES LTD | LONDON | A rating |
| Blue Opal Limited | Bideford | A rating |
| BLUE ORCHID ASPLEY GUISE LTD T/A BLUE ORCHID | Milton Keynes | A rating |
| Blue Orchid Group Ltd | London | A rating |
| Blue Owl Capital UK Limited | London | A rating |
| Blue Park Ventures T/A Tikka Nation | Leeds | A rating |
| BLUE PARTNERS LOGISTICS UK LIMITED | Ipswich | A rating |
| BLUE PEAR DAY NURSERY LIMITED | London | A rating |
| BLUE PEARL PINXTON LTD | Nottingham | A rating |
| Blue Phoenix Ltd | Bourne | A rating |
| Blue Pits Housing Action | Manchester | A rating |
| Blue Precision Technologies Ltd | Maidstone | A rating |
| Blue Prism Limited | Warrington | A rating |
| Blue Projects Limited | Altrincvham | A rating |
| Blue Raincoat Music Ltd | London | A rating |
| Blue Riband Group Limited | London | A rating |
| Blue Ridge Partners Management Consulting (UK) Ltd | London | A rating |
| Blue Rose Care Limited | Egham | A rating |
| Blue Saffron Limited | London | A rating |
| Blue Safire Ltd | Harrow | A rating |
| BLUE SAKURA LTD | Leeds | A rating |
| BLUE SAPHIRE 1 LTD | Eastbourne | A rating |
| Blue Saphire Ltd t/a New Wilmington Hotel | Eastbourne | A rating |
| Blue Sea Food Ltd | Paignton | A rating |
| Blue Skies Healthcare | Walsall | A rating |
| Blue Skies Lifestyle Limited | Bournemouth | A rating |
| Blue Skies Nursery | EDGWARE | A rating |
| Blue Skies Space Ltd. | London | A rating |
| BLUE SKY BUSINESS ADVICE LIMITED | Ilford | A rating |
| BLUE SKY CARE LTD | NEWSTEAD, NOTTINGHAM | A rating |
| Blue Sky Dental | Chelmsford | A rating |
| Blue Sky Dental Limited | West Lothian | A rating |
| BLUE SKY DEVELOPERS LIMITED | LONDON | A rating |
| Blue Sky Enabling Limited | Trowbridge | A rating |
| Blue Sky ERP Ltd | Caersws | A rating |
| BLUE SKY FABRICS LIMITED | Batley | A rating |
| Blue Sky Interactive Limited | Coventry | A rating |
| Blue Sky IP Ltd | London | A rating |
| Blue Sky Low Fell Ltd | Gateshead | A rating |
| Blue Sky Ocean Ltd | London | A rating |
| Blue Sky Portsmouth Limited | Portsmouth | A rating |
| BLUE SKY SHOP FRONTS LTD | Bradford | A rating |
| Blue Spa & Leisure Ltd t/a Natural Spa Factory | Bath | A rating |
| Blue Spark Energy UK Limited | London | A rating |
| Blue Springs Social Care Ltd | Nuneaton | A rating |
| Blue State Digital UK Limited | London | A rating |
| Blue Strawberry AI Ltd | Sandwich | A rating |
| Blue Tech (Scotland) Ltd t/a Cell Links | Glasgow | A rating |
| Blue Thorn Technology Ltd | Birmingham | A rating |
| Blue Thread Solutions Limited | Middlesex | A rating |
| Blue Thunder Sound Ltd | Ivybridge | A rating |