| WALL FRAMES & MOULDING LTD | Glasgow | A rating |
| Wall Hill Care Home Limited | Leek | A rating |
| Wall of Death Ltd | Ely | A rating |
| Wall-Lag (Wales) LTD | Mold | A rating |
| wall2wall carpets and flooring | Bolton | A rating |
| WALL2WALL CARPETS AND FLOORING LIMITED | Bolton | A rating |
| Wallace Collection | London | A rating |
| Wallace HCL Ltd | London | A rating |
| Wallace House | Hertford | A rating |
| Wallace LLP | London | A rating |
| Wallace Quinn | Glasgow | A rating |
| Wallace Stone LLP | Glasgow | A rating |
| Wallace Vets Ltd | Broughty Ferry | A rating |
| Wallace Whittle Limited | Glasgow | A rating |
| Wallasey Cricket Club | Wallasey | A rating |
| Wallasey Specsavers Limited T/A Specsavers Opticians | Wallasey | A rating |
| Wallbrook Advisory Limited | London | A rating |
| Wallcano Tiles Limited | Luton | A rating |
| Walled City Music Trust | Londonderry | A rating |
| Wallenius Wilhelmsen Ocean UK | Southampton | A rating |
| Walleye Capital (UK) Limited | London | A rating |
| WALLINGBROOK HEALTH GROUP | CHULMLEIGH | A rating |
| Wallingford HydroSolutions Ltd | Cardiff | A rating |
| Wallingford Medical Practice | Wallingford | A rating |
| Wallington Christian Centre | Wallington | A rating |
| Wallington Corner News | Wallington | A rating |
| Wallington Express Ltd | London | A rating |
| Wallington Green Grocers Ltd. t/as Green Apple | Wallington | A rating |
| Wallis Avenue Surgery | Maidstone | A rating |
| Walls of Salvation Brentwood Tamil Church | Brentwood | A rating |
| Wallstreetdocs Ltd | London | A rating |
| Wallwork Cambridge Ltd | Swavesey | A rating |
| Wallyford Day To Day Supermarket Ltd t/a Day-Today | Edinburgh | A rating |
| WALMER CONVENIENCE STORES LTD | SEAFORD | A rating |
| Walmer Lodge Residential Care Home | Bradford | A rating |
| Walmer Technology Limited | London | A rating |
| Walmley Care Home Ltd T/A Marian House Nursing Home | Birmingham | A rating |
| Walmley Cricket Club | Sutton Coldfield | A rating |
| Walnut Care Limited | Boston | A rating |
| WALNUT DENTAL CENTRE LTD | Bedford | A rating |
| Walnut Hill Equine Clinic Ltd | Henley in Arden | A rating |
| Walpole Partnership Ltd | London | A rating |
| Walr Group Ltd | London | A rating |
| Walraven Limited | Banbury | A rating |
| Walsall College | Walsall | A rating |
| Walsall Council | Walsall | A rating |
| Walsall Cricket Club | Walsall | A rating |
| Walsall DIY Limited | Walsall | A rating |
| WALSALL GROCERY LIMITED | Walsall | A rating |
| Walsall Healthcare NHS Trust | Walsall | A rating |
| Walsall Housing Group Limited | Walsall | A rating |
| Walsall Local Express Ltd | Walsall | A rating |
| Walsall Wood Convenience Store Ltd T/A Premium Super Save Convenience Store | Walsall | A rating |
| Walsden Cricket and Bowling Club | Todmorden | A rating |
| Walsgrave Road Cakes Limited | Coventry | A rating |
| Walsh Associates | London | A rating |
| Walshaw Sports Club | Bury | A rating |
| Walsin Ltd | Lisburn | A rating |
| Walsingham Support | London | A rating |
| Walsingham Village Stores | Walsingham | A rating |
| Walstead Bicester Limited | Bicester | A rating |
| Walstead Peterborough Limited | Peterborough | A rating |
| Walstead Roche Limited | St Austell | A rating |
| Walter & Wild Limited | London | A rating |
| Walter Carefoot & Sons (Construction) Ltd | Preston | A rating |
| Walter Carefoot & Sons (Transport) Ltd | Preston | A rating |
| Walter Heselwood Limited | Sheffield | A rating |
| Walter James Limited | London | A rating |
| Walter Knoll UK LTD | London | A rating |
| WALTER MANNY LIMITED | Wellington | A rating |
| Walter Stohr Limited T/A Wangford Veterinary Clinic | Beccles | A rating |
| Walter Watson Ltd | Castlewellan | A rating |
| Walters and Cohen Limited | London | A rating |
| Walters Property Developers Limited | Petworth | A rating |
| Walters Resources Limited | Aberdare | A rating |
| Walters UK Limited | Aberdare | A rating |
| WALTERSTONES UK LTD | RAINHAM | A rating |
| Waltham Forest College | London | A rating |
| Waltham Forest Muslim Burial Trust | London | A rating |
| Waltham Gas & Electrics Ltd | London | A rating |
| Waltham International College Ltd | Barking | A rating |
| Walthamstow Cricket Tennis & Squash Club | London | A rating |
| Walthamstow Village Montessori Day Nursery | London | A rating |
| Walther Trowal Limited | Stoke on Trent | A rating |
| WALTLABS.IO EMEA LTD | Letchworth Garden City | A rating |
| Walton Cafe Ltd T/A Walton Cafe | London | A rating |
| Walton Care Limited | Preston | A rating |
| Walton Chemist | Peterborough | A rating |
| Walton Glasgow Ltd t/a Dumpukht | Glasgow | A rating |
| Walton Heath Manor | Tadworth | A rating |
| Walton IT Ltd | weybridge | A rating |
| Walton Village Medical Centre | Liverpool | A rating |
| Walworth After-School Club Limited | London | A rating |
| Walworth Road Specsavers Hearcare Ltd | London | A rating |
| Walworth Road Visionplus Ltd T/A Specsavers Opticians | London | A rating |
| WAM Care Homes Ltd | Llanelli | A rating |
| WAM Engineering Ltd | Tewkesbury | A rating |
| WAM Leisure Limited T/A Fountain Inn | Pontarddulais | A rating |
| Wamai Limited | Nottingham | A rating |
| WAMBA store | Wolverhampton | A rating |
| WAMIN TECH LTD | Luton, England, | A rating |
| WAMO TECHNOLOGY LIMITED | London | A rating |
| Wan Media Ltd | London | A rating |
| Wan Plastering Limited | Slough | A rating |
| WANB EXPRESS UK LTD | Ipswich | A rating |
| Wanderlust Wine | London | A rating |
| Wandle Healthcare Services Limited | London | A rating |
| Wandle Learning Trust | London | A rating |
| Wandsworth Community Empowerment Network | Wandsworth | A rating |
| Wandsworth Medical Centre | London | A rating |
| Wandsworth Premier Ltd T/A Premier | London | A rating |
| Wandsworth Pubs Ltd | Belfast | A rating |
| Wandsworth Town Dental Practice | London | A rating |
| WANG & OGLEY LIMITED | London | A rating |
| Wang Dee Limited | Mitcham | A rating |
| Wang Zeng International Ltd | Prescot | A rating |
| WANGGUIREN BRIGHTON LTD T/A Mr Wang Hot Pot Brighton | Brighton | A rating |
| Wanhua Borsodchem UK branch | London | A rating |
| Wanis Management Services LLP | London | A rating |
| Wannabeco Limited | London | A rating |
| Wanner International Ltd | Fleet | A rating |
| Wansa Group Commodities | London | A rating |
| Wansabai Limited t/a Wansabai Thai Massage and Spa | Bracknell | A rating |
| Wanstead and Snaresbrook Cricket Club | London | A rating |
| Wanstead Spice LTD TA The Lane | London | A rating |
| Wanstor Ltd | London | A rating |
| Want2BThere Limited | London | A rating |
| WANTS & NEEDS LTD | Stourbridge | A rating |
| Wapeka Ltd | Purley | A rating |
| Wapping Wharf Ltd | London | A rating |
| WAQAS AND BROTHERS LTD | wakefield | A rating |
| WAQAS AUTOS LIMITED | Ilford | A rating |
| Waqas Halal Meat | Rochdale | A rating |
| WAQAS@GROUP LTD | London | A rating |
| War Child UK | London | A rating |
| Waracle Ltd | Dundee | A rating |
| Waraich Brothers Ltd | Northwich | A rating |
| Warburg Pincus International LLC | London | A rating |
| WARBURTONS (ISLE OF WIGHT) LIMITED | Ryde | A rating |
| Warburtons Ltd | Bolton | A rating |
| WARD & ALLISON DENTAL PRACTICE | ILKESTON | A rating |
| Ward & Snape Ltd | Macclesfield | A rating |
| Ward and Burke Construction Ltd | London | A rating |
| Ward Farming Ltd | Leiston | A rating |
| Ward Ferry Management UK Ltd | London | A rating |
| Ward Gethin Archer Limited | Kings Lynn | A rating |
| Ward Hadaway LLP | Newcastle upon Tyne | A rating |
| Ward Power Limited | Sheffield | A rating |
| Ward Restaurants Group Ltd | Newry | A rating |
| Ward Williams Associates | Stonehouse | A rating |
| Ward Williams Creatives Limited | Weybridge | A rating |
| Warde Groupage Ltd | NEWRY | A rating |
| Wardend Fishery Ltd | Birnie By Elgin | A rating |
| Wardens Lodge Limited | Newbury | A rating |
| Wardley News Limited | Wardley | A rating |
| Wardog Studios ltd | Edinburgh | A rating |
| Wardour Communications Limited | London | A rating |
| Wardown Engineering Ltd | HOUGHTON REGIS | A rating |
| WARDROBE CITY LTD | Hayes | A rating |
| Wards Solicitors | Bristol | A rating |
| Ware Road Express Ltd t/a Ware Road Express | Hertford | A rating |
| Ware Supermarket LTD; T/A Costcutter | Ware | A rating |
| Warehouse Express Ltd | Norwich | A rating |
| Waremoss Ltd | Uckfield | A rating |
| Wargrave Cricket Club | Reading | A rating |
| WARID TRADING LIMITED | Witham | A rating |
| Waring and McKenna Limited | London | A rating |
| Warings Furniture | Larling | A rating |
| Waringstown Cricket Club | Craigavon | A rating |
| WARIS ENTERPRISES LIMITED T/A Sheesh Mahal | Middlesex | A rating |
| Warley Car Clinic (Mid) Limited | Birmingham | A rating |
| Warley Food & Wine Ltd | Brentwood | A rating |
| Warm &Cold Maintenance Ltd | London | A rating |
| Warm Caring Heart Ltd | ST ANNES, LYTHAM | A rating |
| Warm Hearts Community Support | Stoke-on-Trent, | A rating |
| WARM HUT UK | SALFORD | A rating |
| Warm Limited | Poole | A rating |
| Warm Street Ltd | London | A rating |
| Warm Welcome Hotels (STHN) Ltd | Dartmoor | A rating |
| WARMER HOME IMPROVEMENTS LTD | Dorchester | A rating |
| WARMEST WELCOME 2 LIMITED | Normaton | A rating |
| warmest welcome 3 limited | Normanton | A rating |
| Warminster Cricket Club | Warminster | A rating |
| Warminster School | Warminster | A rating |
| Warmline Business Limited T/A GMD Tyres | Essex | A rating |
| Warmpro Insulation Specialists Ltd | London | A rating |
| WARMSTORE COLNBROOK LIMITED | COLNBROOK | A rating |
| Warmup Plc | London | A rating |
| Warmworks Scotland LLP | Edinburgh | A rating |
| Warn an Co Limited | Dorking | A rating |
| Warner Bros Television Production UK Limited | London | A rating |
| Warner Bros. Entertainment UK Limited | London | A rating |
| Warner Bros. Productions Limited | London | A rating |
| WARNER BROS. STUDIOS LEAVESDEN LIMITED | Leavesden | A rating |
| Warner Land Surveys Limited | Birmingham | A rating |
| Warner Media International Limited | London | A rating |
| Warner Music (UK) Ltd | London | A rating |
| Warners Solicitors LLP | Edinburgh | A rating |
| WARP DIGITAL ENTERTAINMENT LIMITED | LONDON | A rating |
| Warp Records Ltd | London | A rating |