| Bristol Airport Limited | Bristol | A rating |
| Bristol Batteries Ltd | Bristol | A rating |
| Bristol Bawarchi Limited t/a King of Biryani | Bristol | A rating |
| Bristol Bay Capital | Staines | A rating |
| Bristol Best Halal Butcher Ltd | Bristol | A rating |
| Bristol Cafe Ltd | Bristol | A rating |
| Bristol Cakebox Limited | Bristol | A rating |
| Bristol Care Homes Limited | Bristol | A rating |
| BRISTOL CENTRAL HEATING LTD | Bristol | A rating |
| BRISTOL CHAUFFEUR CARS LTD | Bristol | A rating |
| Bristol Chinese Christian Church | Bristol | A rating |
| Bristol City Council | Bristol | A rating |
| Bristol City Football Club Limited | Bristol | A rating |
| Bristol City Women Football Club Limited | Bristol | A rating |
| Bristol Cricket Club | Failand | A rating |
| Bristol Drugs Project Limited | Bristol | A rating |
| Bristol Eagle Limited | Bristol | A rating |
| Bristol Fertility Clinic | BRISTOL | A rating |
| Bristol Fluid System Technologies Ltd. T/A Swagelok Central UK | Bristol | A rating |
| Bristol Flyers Limited | Bristol | A rating |
| Bristol Global Mobility Limited | London | A rating |
| BRISTOL GRILLED CHICKEN LIMITED | Montpelier | A rating |
| Bristol Health Ltd | Bristol | A rating |
| Bristol Heating Services Ltd | Bristol | A rating |
| Bristol Housing and Support Ltd | Bristol | A rating |
| Bristol Laboratories Limited | Berkhamstead | A rating |
| Bristol Music Trust | Bristol | A rating |
| Bristol Newmedica Ltd | Bristol | A rating |
| Bristol NHS Foundation Trust | Bristol | A rating |
| BRISTOL NURSING SERVICES LIMITED | BRISTOL | A rating |
| Bristol Old Vic & Theatre Royal Trust Limited | Bristol | A rating |
| BRISTOL OLD VIC THEATRE SCHOOL LTD | BRISTOL | A rating |
| BRISTOL PHONES & TECH SPECIALISTS LIMITED | Bristol | A rating |
| Bristol Photos Ltd T/A Snappy Snaps | Bristol | A rating |
| Bristol pitbulls Ltd | Bristol | A rating |
| Bristol Pizza Master Limited | Bristol | A rating |
| Bristol Reach Supported Living Services Ltd. | Bristol | A rating |
| Bristol Rovers Football Club Limited | Bristol | A rating |
| Bristol Rugby Club Limited | Bristol | A rating |
| BRISTOL SCHOOL OF ACTING LTD | Bristol | A rating |
| BRISTOL SECURITY AND PROPERTY MANAGEMENT LTD | ST WERBURGHS | A rating |
| Bristol Specsavers Ltd | Bristol | A rating |
| Bristol Superlight Ltd | Yateley | A rating |
| Bristol Sweet Mart Limited | Bristol | A rating |
| Bristol Uniforms | Yate | A rating |
| Bristol Van Centre | Bristol | A rating |
| Bristol Video Company | Bristol | A rating |
| Bristol Vineyard | Bristol | A rating |
| Bristol Waste Company Ltd. | Bristol | A rating |
| Bristol-Myers Squibb Pharmaceuticals Limited | Denham | A rating |
| Bristol786 Limited, T/a Papa John's | Bristol | A rating |
| Bristow Helicopters Ltd | Dyce | A rating |
| Bristows Services Limited | London | A rating |
| Brit Amber Fashion LTD | Bury | A rating |
| BRIT ASIAN KITCHEN LIMITED | Manchester | A rating |
| BRIT BAZAR LTD | London | A rating |
| Brit Customs LImited | Chelmsford | A rating |
| BRIT DIAMOND LIMITED | Bury | A rating |
| BRIT ENGINEERING SERVICES LTD | Dunstable | A rating |
| BRIT EXPRESS LIMITED | Essex | A rating |
| Brit Fabrics Limited | Dudley | A rating |
| Brit Fleet Services Limited | Worthing | A rating |
| BRIT GLAZING LTD | BEXLEY | A rating |
| Brit Group Services Limited | London | A rating |
| BRIT OCEAN UK LTD | Swindon | A rating |
| BRIT SECURITY AND FACILITIES MANAGEMENT LTD | London | A rating |
| Brit Shopfitters Limited | London | A rating |
| Brit Solicitors Ltd | London | A rating |
| BRIT TASTE LTD | Heywood | A rating |
| Brit Tax Ltd | Enfield | A rating |
| Brita Water Filter Systems Limited | Bicester | A rating |
| Britain Tech Ltd | Middelsex | A rating |
| Britam Shipping Ltd | Coggeshall | A rating |
| Britannia @ The Beach | KINGSBRIDGE | A rating |
| Britannia Bud Company Limited | London | A rating |
| BRITANNIA BUSINESS CONSULTING LIMITED | London | A rating |
| Britannia Cloud Ltd | London | A rating |
| BRITANNIA DESIGN AND PRINTING LIMITED | Birmingham | A rating |
| Britannia Education Trust | London | A rating |
| Britannia Fast Food Liverpool | Liverpool | A rating |
| Britannia Financial Group Limited | London | A rating |
| Britannia Fire & Security Ltd | Peterborough | A rating |
| BRITANNIA FOSTERING AGENCY LIMITED | Ilford | A rating |
| Britannia Global Investments Limited | London | A rating |
| BRITANNIA HALAL MEAT LIMITED | Ilford | A rating |
| Britannia House Dental Surgery | Newport | A rating |
| Britannia Onsite Concrete Ltd | Birmingham | A rating |
| Britannia Pharmaceuticals Ltd | Reading | A rating |
| Britannia Refined Metals Limited | Northfleet | A rating |
| Britannia Row Productions Limited | Weybridge | A rating |
| Britannia School of Academics Ltd | London | A rating |
| BRITANNIA SERVICE STATION LTD | Coltchester | A rating |
| Britannia Skips Ltd | Dagenham | A rating |
| Britannia Social Care Ltd | Wolverhampton | A rating |
| BRITANNIA STAFFORD LTD | Stafford, Staffordshire | A rating |
| Britannia Technopolymers Limited | NELSON | A rating |
| BRITANNIA TRADERS LIMITED | London | A rating |
| BRITANNIA VISA & IMMIGRATION SUPPORT LTD | London | A rating |
| Britannic FurnitureLtd | Manchester | A rating |
| BRITANNIC GROUP LIMITED TA Dallas Chicken Loughborough | Loughborough | A rating |
| Britasia TV Networks Ltd | Birmingham | A rating |
| BRITBAKERS LONDON LTD | London | A rating |
| Britbox International Limited | London | A rating |
| Britcom Hub Ltd | Manchester | A rating |
| Britdeals Limited | Warrington | A rating |
| BRITE CONSULTANCY SERVICES LIMITED | London | A rating |
| Brite Dental Edinburgh | EDINBURGH | A rating |
| BRITE MANAGEMENT LTD | London | A rating |
| Britelite Windows Ltd | Maidstone | A rating |
| Briter Bridges Ltd | Guildford | A rating |
| BRITES ASSOCIATES LIMITED | Hounslow | A rating |
| Britestone Enterprises Ltd | London | A rating |
| BriteVox Limited | Telford | A rating |
| Briteyellow Limited | Cranfield | A rating |
| BRITGREEN ENERGY LTD | Manchester | A rating |
| Brithdir Mawr Cyfyngedig | Bangor | A rating |
| Britian Logistics Limited | Manchester | A rating |
| Britindia Foods LTD | Worcester | A rating |
| British Academy | London | A rating |
| British Academy of Jewellery Ltd | London | A rating |
| British Academy Of Songwriters, Composers and Authors | London | A rating |
| British Airways Engineering Gatwick Limited | West Sussex | A rating |
| British Airways PLC | Harmondsworth | A rating |
| BRITISH AMATEUR BOXING ASSOCIATION LIMITED | Sheffield | A rating |
| BRITISH AMATEUR GYMNASTICS ASSOCIATION TRADING AS BRITISH GYMNASTICS | NR NEWPORT | A rating |
| British American Tobacco Plc | London | A rating |
| British and Foreign Bible Society | Swindon | A rating |
| British Arab Commercial Bank Limited | London | A rating |
| British Asian Fusion Ltd T/A Adore | Harrow | A rating |
| British Asian Trust | London | A rating |
| British Assessment Bureau | WEST MALLING | A rating |
| British Association for Performing Arts Medicine | London | A rating |
| British Association for the Advancement of Science | London | A rating |
| British Association of Dermatologists | London | A rating |
| British Aviation Academy Ltd | Cambourne | A rating |
| BRITISH BANGLA WELFARE TRUST | London | A rating |
| British Beer and Pub Association | London | A rating |
| British Bluegrass Music Association | Tamworth | A rating |
| BRITISH BOARD OF AGREMENT | Watford | A rating |
| British Board of Film Classification | London | A rating |
| British Broadcasting Corporation | Birmingham | A rating |
| British Business Bank | Sheffield | A rating |
| British Canoeing | Nottingham | A rating |
| British Car Auctions Limited | Farnham | A rating |
| BRITISH CHINA INTERNATIONAL CONSULTING LIMITED | Oxford | A rating |
| British Council | London | A rating |
| British Council (IAESTE Programme) | Belfast | A rating |
| British Council (Language Assistants) | London | A rating |
| British Curling | Stirling | A rating |
| British Cycling | Manchester | A rating |
| British Deaf Association | London | A rating |
| British Editorial Society of Bone & Joint Surgery | London | A rating |
| British Electric Lamps Ltd | Wakefield | A rating |
| British Engineering Services Ltd | Warrington | A rating |
| British Fashion Council | London | A rating |
| British Fencing | London | A rating |
| British Friends of Neve Shalom-Wahat al-Salam | Edgware | A rating |
| British Garden Centres (Woodthorpe Hall Garden Centres) | Alford | A rating |
| British Heart Foundation | London | A rating |
| British Home and Hospital for the incurables | London | A rating |
| British Horological Institute Ltd | Newark | A rating |
| BRITISH HORSERACING AUTHORITY | London | A rating |
| British Interactive Media Association | London | A rating |
| British International Investment plc | London | A rating |
| British Judo | Walsall | A rating |
| British Library | London | A rating |
| British Olympic Association | London | A rating |
| British Olympic Foundation | London | A rating |
| British Pipeline Agency Limited | Hemel Hempstead | A rating |
| British Polythene Limited | Rushden | A rating |
| British Psychotherapy Foundation | London | A rating |
| British Red Cross | London | A rating |
| British Rema Rotary Engineering Ltd | Chesterfield | A rating |
| British Retail Consortium | London | A rating |
| British Rowing Limited | London | A rating |
| British Shooting Limited | London | A rating |
| British Society for Rheumatology | London | A rating |
| British Solar Renewables Limited | Shepton Mallet | A rating |
| British Standards Institution | London | A rating |
| British Steel Limited | Scunthorpe | A rating |
| British Sugar UK & Ireland | Peterborough | A rating |
| British Swimming Limited | Loughborough | A rating |
| British Tourist Authority | Birmingham | A rating |
| British Triathlon Federation | Loughborough | A rating |
| British Trust for Ornithology | Thetford | A rating |
| British Union Conference of Seventh-Day Adventists | Watford | A rating |
| British Water | London | A rating |
| British Wheelchair Basketball | Loughborough | A rating |
| British Youth for Christ | Brierley Hill | A rating |
| Britlaw Chambers Ltd | Manchester | A rating |
| Britmate Ltd | Hemel Hempstead | A rating |
| BritMed Healthcare Ltd | Chatham | A rating |
| Britmet Tileform Ltd | Tipton | A rating |
| Briton Luggage Depot Ltd | Dagenham | A rating |
| Britona Limited | London | A rating |
| BRITPAK LIMITED | St. Helens | A rating |
| BRITRPA LTD | WEMBLEY | A rating |
| Brits Construction Services Ltd | Harrow | A rating |
| Brits Energy Limited | London | A rating |
| Britschool4U Ltd | Shrewsbury | A rating |