| Westwood Clinic | Peterborough | A rating |
| Westwood Global Energy Limited | Aberdeen | A rating |
| Westwood Homecare (NORTHWEST) LIMITED | MANCHESTER | A rating |
| WESTWOOD JOINERY & CONSTRUCTION LIMITED | Sheffield | A rating |
| WESTWOOD LODGE CARE HOME | Newcastle upon Tyne | A rating |
| Westwood Medical Health Centre | Coventry | A rating |
| WESTWOOD MOT LIMITED | Oldham | A rating |
| WESTWOOD RANCH LTD | Bolton | A rating |
| Westwoods Convenience Store Limited | Standon Ware | A rating |
| Westwoodside Store Ltd T/A Westwoodside Store - Premier - Post Office | South Yorkshire | A rating |
| WESUN HEALTH UK LIMITED | London | A rating |
| WET Environmental Ltd | Warwick | A rating |
| Wet Weather Ltd | London | A rating |
| Wetech Accessories Ltd | Woking | A rating |
| Wetherby Convenience Ltd | Leeds | A rating |
| Wetherby High School | Leeds | A rating |
| WETHERBY HOME CARE LIMITED | York | A rating |
| Wetherby House Montessori Kensal Rise Limited | London | A rating |
| Wetherby House Montessori Limited | Northwood | A rating |
| Wetland Limited | East Sheen | A rating |
| Wetley Manor Care Home | Stoke-on-Trent | A rating |
| Wetmore Road Surgery | Burton on Trent | A rating |
| Wetradephones Ltd | Wickford | A rating |
| WeTransfer UK Limited | London | A rating |
| WETRIP.YY LTD. | London | A rating |
| Wettone Matthews Limited | Alton | A rating |
| WEUNITEDSERVICES LTD | London | A rating |
| WeWebians Ltd | London | A rating |
| WeWork International Limited | London | A rating |
| WEX Europe Limited | London | A rating |
| Wey Bridging Finance Limited | Weybridge | A rating |
| Weybridge Cricket Club | Weybridge | A rating |
| Weybridge Dental Care Ltd | West Byfleet | A rating |
| Weybridge dental practice | weybridge | A rating |
| Weybridge Partners Limited | London | A rating |
| Weybridge Pharma Limited | Harrow | A rating |
| Weybridge Veterinary Centre | London | A rating |
| Weydon School | Farnham | A rating |
| WEYHILL STORES | HAMPSHIRE | A rating |
| Weymouth Dent Ltd | Gateshead | A rating |
| Weymouth Pharma Ltd | Weymouth | A rating |
| Weymouth Piri Piri Ltd | Weymouth | A rating |
| Weymouth Restaurant Ltd | Dorchester | A rating |
| Weymouth Visionplus Limited | Weymouth | A rating |
| Weyspring Limited | Haslemere | A rating |
| WF Federated GP Network Ltd. | Highams Park | A rating |
| WF Management Ltd | London | A rating |
| WF PICCADILLY LTD | lONDON | A rating |
| WFL (UK) Limited | Brinkworth | A rating |
| WFT London Ltd | Canvey Island | A rating |
| WFW Global LLP | London | A rating |
| WFX Hospitality Limited | Holywood | A rating |
| WG Curry House Ltd | Blantyre | A rating |
| WG Installations Limited | Northampton | A rating |
| WG1 Finsbury Park Limited | London | A rating |
| WGC (UK) Limited | London | A rating |
| WGF Hunt & Son | Totnes | A rating |
| WGK Clinical Services Limited | Stevenage | A rating |
| WGP Architects Ltd | London | A rating |
| WGP Global Limited | London | A rating |
| WGSN Limited | London | A rating |
| WH 459 Limited | Matlock | A rating |
| WH Investments T/A Victoria house care home | Warrington | A rating |
| WH Ireland Ltd | London | A rating |
| WH Metals Ltd | Preston | A rating |
| WH Pubs Ltd | Tonbridge | A rating |
| WH Smith Travel Limited | Swindon | A rating |
| WH TRADING UKCT LTD | London | A rating |
| Whaddon Healthcare | Bletchley | A rating |
| Whaddon Road Evangelical Presbyterian Church | Cheltenham | A rating |
| Whaddya Know? Limited | Harrogate | A rating |
| Whale and dolphin Conservation | Moray | A rating |
| Whaleback Ltd | Hove | A rating |
| Whalebone Fastfood T/A Kings Flavour | Essex | A rating |
| Whaleco UK Limited | London | A rating |
| Whalley Cricket Club | Whalley | A rating |
| Wharf Capital Global Markets Limited | London | A rating |
| WHARF PROPERTY GROUP LTD | STANFORD LE HOPE | A rating |
| Wharfedale Homes Ltd | Knaresborough | A rating |
| Wharton Asset Management UK LLP | London | A rating |
| What A Goal Ltd | Leicester | A rating |
| What Plus LTD | Leicestershire | A rating |
| What's On Tickets Ltd | Congleton | A rating |
| WHAT3WORDS LIMITED | LONDON | A rating |
| Whatfix Limited | London | A rating |
| Whatley & Co (Pewsey) Ltd | Pewsey | A rating |
| Whatnext Global Limited | London | A rating |
| Whatnot Global Limited | London | A rating |
| WhatsOnStage Limited | Hull | A rating |
| Whe Care Services Ltd | Liverpool | A rating |
| WHEAT HENRY LIMITED T/A HCF CHINESE TAKEAWAY | OLDBURY | A rating |
| WHEATCROFT FOOD STORE | BIRMINGHAM | A rating |
| Wheatley Software Solutions Limited | Tostock | A rating |
| WHEATOO LTD | London | A rating |
| Wheatsheaf (Sandbach) Ltd | Cheshire | A rating |
| Wheel Freedom Limited | Chessington | A rating |
| WHEEL FUSION LTD | Glasgow | A rating |
| Wheel Get You There Limited | Hayes | A rating |
| Wheel Lane store Ltd | Birmingham | A rating |
| Wheelabrator Group Limited | Altrincham | A rating |
| WheelRight Ltd | Oxford | A rating |
| Wheels Auto Limited | Slough | A rating |
| Wheels For Less Limited | Staines-Upon-Thames | A rating |
| Wheelshare (London) Ltd | London | A rating |
| Wheely Technologies Ltd | London | A rating |
| Whelan Purcell LTD | London | A rating |
| Whelan Refining Ltd | Stoke onTrent | A rating |
| When in Rome Wine Ltd | Stroud, Glos | A rating |
| Where Giants Roam Limited | Aberdour | A rating |
| Whereby UK Operations Ltd | London | A rating |
| Wherry And Sons Limited | Bourne | A rating |
| Whessoe Engineering Limited | Darlington | A rating |
| WHETLEY PLUMBING UK LTD | Bradford | A rating |
| Whetstone Chemist Ltd | Leicester | A rating |
| Whetstone Dental Surgery Limited | Leicester | A rating |
| Whetstone Medical Centre | Birkenhead | A rating |
| WHICH INDEPENDENT SCHOOLS LTD | London | A rating |
| Which? (Consumers Association) | London | A rating |
| Whichford Enterprises Ltd | Folkestone | A rating |
| Whichrate Consulting LTD | Uttoxeter | A rating |
| Whim Hospitality Limited | Swindon | A rating |
| Whinhall Minimarket | Airdrie | A rating |
| Whippendell Healthcare Ltd | WATFORD | A rating |
| Whippet UK Limited | London | A rating |
| Whipps Cross Garage (London) Ltd | London | A rating |
| WHIPPY ICE'S LTD | Crawley | A rating |
| Whirlwind Elite Ltd. T/As Subway | Edgware | A rating |
| Whiskey and Wealth Club | Richmond | A rating |
| Whiskey Villa Ltd | Manchester | A rating |
| WHISKY EXPRESS LTD. | Bicester | A rating |
| Whisp Limited | London | A rating |
| WHISPER FILMS LIMITED | Surrey | A rating |
| Whisper Films Ltd | London | A rating |
| Whispers Care Solutions Limited | London | A rating |
| Whisperz Ltd | London | A rating |
| WHISTLE DIGITAL LIMITED | London | A rating |
| WHISTLE PUNKS UK LTD | Ascot | A rating |
| Whistleworth Ltd | Wakefield | A rating |
| WHISTON HEALTHCARE UK LTD | ROTHERHAM | A rating |
| Whiston Parish Church Cricket Club (non postal address) | Rotherham | A rating |
| Whitbread Group Plc | Dunstable | A rating |
| Whitburn Food Store Limited | Bathgate | A rating |
| Whitby Group Practice | Whitby | A rating |
| Whitby Passage to India Limited | Whitby | A rating |
| Whitby Wood Limited | London | A rating |
| Whitchurch Medical Centre | Cardiff | A rating |
| WHITCHURCH OFFY LTD | Romford | A rating |
| Whitcombe & Shaftesbury | London | A rating |
| White & Case LLP | London | A rating |
| White & Lloyd Consulting Engineers Ltd | Thames Ditton | A rating |
| WHITE AND SOFT LTD | London | A rating |
| White Arkitekter | London | A rating |
| White Bear Corporate Services Limited | London | A rating |
| WHITE BEAR RICKMANSWORTH LTD | RICKMANSWORTH | A rating |
| White Bird Logistics and Warehousing Ltd | Wollaston | A rating |
| White Box Financial Limited | Norwich | A rating |
| White bridge mortgages ltd | Hamilton | A rating |
| White Bullet Solutions Limited | Cheam | A rating |
| WHITE CHILLI LTD TA INDIAN VILLA | Motherwell | A rating |
| White Cliffs Medical Centre | Dover | A rating |
| White Cloud Capital Advisors Limited | London | A rating |
| White Coat Productions Ltd | London | A rating |
| WHITE COLLAR SECURITY LTD | Bradford | A rating |
| White Cook Chef LTD | Brighton and Hove | A rating |
| White Creek Capital LLP | London | A rating |
| White Cube Limited | London | A rating |
| White Dental | Pickering | A rating |
| White Dew Ltd | Birmingham | A rating |
| WHITE EAGLES GEN TRADING LTD | Manchester | A rating |
| White Enamel Ltd | Ipswich | A rating |
| White Falcon 11 Ltd | Leyland | A rating |
| White Feather Trading Ltd | Derby | A rating |
| White Gables Care Home | Lincoln | A rating |
| WHITE GOLD LIMITED | Oldbury | A rating |
| White Hall Lending Ltd | LONDON | A rating |
| White Hart Associates (London) Limited | Richmond | A rating |
| WHITE HART SUPERMARKET | TOTTENHAM | A rating |
| White Hart Ufton Ltd | Leamington Spa | A rating |
| White Hawk Limited | Birmingham | A rating |
| White Heart Care Ltd | Brighton | A rating |
| White Horse Caravan Company Limited | Selsey | A rating |
| WHITE HORSE CONSTRUCTION AND ENGINEERING LTD | Kingston Upon Thames | A rating |
| White Horse Herts Ltd | Herts | A rating |
| White Horse Medical Practice | Faringdon | A rating |
| White Horse Removals Ltd | Bromley | A rating |
| White House Dental Practice Limited | Southall | A rating |
| White House Service Station | Keston | A rating |
| White House Service Station Ltd | Norfolk | A rating |
| White Knight Accountancy Limited | CORBY | A rating |
| WHITE LABEL BEAUTY LTD | London | A rating |
| White Label London Limited | London | A rating |
| White Label Publishing Ltd | Croydon | A rating |
| WHITE LAYERS LTD | LONDON | A rating |
| White Leaf Support Ltd | High Wycombe | A rating |
| White Lodge & St Helens | Bournemouth | A rating |
| White Lodge Care Home | Marlow | A rating |
| White Lodge Medical Practice | Enfield | A rating |
| White Lodge Rest Home Limited | Southampton | A rating |
| White Logistics and Storage Limited | Pershore | A rating |
| WHITE MARSH RESOURCES LTD | Cardiff | A rating |