| Watling View School | ST. ALBANS | A rating |
| Watmos Community Homes | Walsall | A rating |
| WATNEY COLLEGE LIMITED | London | A rating |
| Watney Supermarket Ltd T/A Priyo Bazzar | London | A rating |
| WATNEY WIMPY LTD | LONDON | A rating |
| Watra Care Limited | Birmingham | A rating |
| Watson & Sole Associates Ltd | Surrey | A rating |
| WATSON RAMSBOTTOM LIMITED | BLACKBURN | A rating |
| Watson-Marlow Limited | Falmouth | A rating |
| Watsonian Cricket Club | Edinburgh | A rating |
| WATSONS FARM EGGS LIMITED | BARKING | A rating |
| Watt Energy Saver Ltd | New Ollerton | A rating |
| Wattec Ltd | Manchester | A rating |
| Watton Edwards News Limited | Watton | A rating |
| Watton Stores | Norfolk | A rating |
| Watton Stores Limited | Bedford | A rating |
| WATTS AND COMPANY LIMITED | London | A rating |
| Watts Farms Packers Ltd | Dartford | A rating |
| WATTS HEALTHCARE LIMITED | ROCHESTER | A rating |
| Wattstor Ltd | London | A rating |
| WATZ LTD | NOTTINGHAM | A rating |
| Waugh Thistleton Architects Ltd. | London | A rating |
| Waukesha Bearings Ltd | Glasgow | A rating |
| Wave Creators Limited | Gerrards Cross | A rating |
| Wave Direct Limited | Newcastle Upon Tyne | A rating |
| Wave Fashion Limited T/a Krisp London | Willesden, London | A rating |
| Wave Hub Development Services Ltd | Hayle | A rating |
| WAVE PHARMA LIMITED | EDGWARE | A rating |
| WAVE PHOTONICS LTD | Cambridge | A rating |
| Wave Talent | London | A rating |
| WAVE Trauma Centre | Belfast | A rating |
| Wave UK Services Limited | London | A rating |
| WaveBreak Therapeutics Limited | Cambridge | A rating |
| WaveMetrix Limited | London | A rating |
| Wavenet Limited | Solihull | A rating |
| Wavereley Education Foundation Trust | Birmingham | A rating |
| Waverley Borough Council | Godalming | A rating |
| Waverley Care | Edinburgh | A rating |
| Waverley Hotel (Maryport) Ltd | Maryport | A rating |
| Waverley Medical Practice | COATBRIDGE | A rating |
| WAVERLY CARE SERVICES LTD | Bournemouth (Dorset) | A rating |
| Waverton Investment Management | London | A rating |
| WAVERTREE CARE LTD | London | A rating |
| Waves Solutions Ltd | Middx | A rating |
| WAVES WAVES UK LTD | London | A rating |
| Wavestone Advisors UK Limited | London | A rating |
| Wavetel Business Ltd | Goodmayes | A rating |
| Wavetel Limited | Goodmayes | A rating |
| Wavetrak Limited | Plymouth | A rating |
| Wavin Limited | Doncaster | A rating |
| Wavteq Limited | Belfast | A rating |
| Wawa Fertility Limited | London | A rating |
| Waxham House | Ryde | A rating |
| Waxman Energy Ltd | Elland | A rating |
| Way Ahead Group LTD | Nottingham | A rating |
| Way Of Life Management Ltd | London | A rating |
| Way Step Ltd t/a Apek Pharmacy | London | A rating |
| WAY2CIS Limited | London | A rating |
| WAY2IT SOLUTIONS LIMITED | Brentford | A rating |
| Way2Save Harlesden Limited | London | A rating |
| WAYCORE LTD | London | A rating |
| Wayfair (UK) Limited | London | A rating |
| Wayfarer Restaurant Limited | Wigan | A rating |
| Wayflyer UK Limited | London | A rating |
| Wayforward Specialist Support Services LTD | Newton Abbot | A rating |
| Waygood Real Estate Limited | Swansea | A rating |
| Wayland Additive Limited | Huddersfield | A rating |
| Wayland Games Limited | Hockley | A rating |
| Waymade Plc | Essex | A rating |
| Waymap Limited | London | A rating |
| Waymo UK Ltd | Oxford | A rating |
| Wayne Kerr Electronics Ltd | Bognor Regis | A rating |
| Wayne Leighton LLP | Elstree | A rating |
| WAYPOINT COMMODITIES LIMITED | LONDON | A rating |
| Waypoint Consulting Limited | London | A rating |
| Ways to Wellness Foundation | Newcastle upon Tyne | A rating |
| WAYSIDE COMMUNICATIONS LTD | Birmingham | A rating |
| Wayside Lodge Equestrian LTD | Leicester | A rating |
| Wayss & Freytag UK | London | A rating |
| Waystocap Limited | London | A rating |
| Waystone Compliance Solutions (UK) Ltd | Tonbridge | A rating |
| Waystone Governance (UK) Limited | Leeds | A rating |
| Waystone Transfer Agency Solutions (UK) Limited | Leeds | A rating |
| Waythrough | Bowburn | A rating |
| Wayve Technologies Ltd | London | A rating |
| WAZ BUILDERS LTD | London | A rating |
| WAZ Properties Ltd | MILDENHALL | A rating |
| WAZIR FOOD AND WINE LTD | London | A rating |
| WAZIR PETROLEUM LIMITED | Studley | A rating |
| WAZIRI ENTERPRISES LTD | Hampshire | A rating |
| Wazobia Africa Ltd | Newcastle Upon Tyne | A rating |
| WAZOBIA AFRICANA LIMITED T/a ACHAKILI African Restaurant & Lounge | Sunderland | A rating |
| Wazoku Limited | London | A rating |
| WB Chambers Farms ltd | Maidstone | A rating |
| WB Power Services Limited | Heanor | A rating |
| WB Shiels Ltd | London | A rating |
| WB The Creative Jewellery Group | Birmingham | A rating |
| WBCSD UK | London | A rating |
| WBD Group Limited | London | A rating |
| WBFC Limited | London | A rating |
| WBM DESIGN AND CONSTRUCTION LTD | CLACTON-ON-SEA | A rating |
| WBS Solutions Limited | London | A rating |
| WBS WHOLESALE LIMITED | Birmingham | A rating |
| WBW Solicitors LLP | Newton Abbot | A rating |
| WBYS Limited T/A Shuperb | Leicester | A rating |
| WBZ CARS LIMITED | Salford | A rating |
| wca environment Ltd | Faringdon | A rating |
| WCG Abbey Ltd | Huddersfield | A rating |
| WCG Clayton ltd | Huddersfield | A rating |
| WCG Northfield Ltd t/a Northfield Care Centre | Doncaster | A rating |
| WCL Infrastructure Ltd | Bristol | A rating |
| WCMC | Cambridge | A rating |
| WCN Care Ltd | Brinkworth | A rating |
| WCS CARE GROUP LIMITED | Warwickshire | A rating |
| WD Accountants Ltd | Manchester | A rating |
| WD Meats | Coleraine | A rating |
| WD-40 Company Ltd | Milton Keynes | A rating |
| WDA CRICKET LIMITED | St Albans | A rating |
| WDFG UK Limited | Feltham | A rating |
| WDI UK Ltd | London | A rating |
| WDKX LTD | London | A rating |
| WDP (Stirling) Ltd | Alloa | A rating |
| WDR Homecare Ltd t/a Right at Home Cheshire East | Stockport | A rating |
| WDS Associates LS Limited | Kingswood | A rating |
| WDW TRADING CO. LTD | Sunbury-On-Thames | A rating |
| We are ADAMO ltd | Fyfield | A rating |
| WE ARE ALIVE STUDIO LTD | Nottingham | A rating |
| We Are Base Limited | Bournemouth | A rating |
| WE ARE COVERT LIMITED | Broadstairs | A rating |
| We Are Creative Equals Limited | London | A rating |
| We Are Family London Ltd | London | A rating |
| We Are Fred Creative Limited | Chelmsford | A rating |
| WE ARE FUTURES LIMITED | London | A rating |
| WE ARE GOOS LIMITED | WEST SUSSEX | A rating |
| We Are Indigo Ltd | Manchester | A rating |
| We are Luxe Limited | Glasgow | A rating |
| We Are Orchard Limited | London | A rating |
| WE ARE PERCENT LTD | London | A rating |
| We Are Pioneer Group Limited | London | A rating |
| We Are Purposeful | London | A rating |
| We Are Rival Ltd | London | A rating |
| We Are Roast Ltd | London | A rating |
| We Are Seventeen Limited | London | A rating |
| We Are Snook Limited | Glasgow | A rating |
| We are Social Ltd | London | A rating |
| We Are Sunday Ltd | London | A rating |
| We Are The Care Company Limited | Theale | A rating |
| We Are Tilt Ltd | Brighton | A rating |
| We Belong | London | A rating |
| We Best Ltd | Portsmouth | A rating |
| WE BIZ (UK) LTD | Abbots Langley, England, | A rating |
| We Bottle | Dundonald | A rating |
| WE Bridge International Ltd | Cardiff | A rating |
| WE BROTHERS LTD | London | A rating |
| we buy any car | Manchester | A rating |
| We Buy Any Food Machinery Ltd | Telford | A rating |
| We Care (TJ) Limited | Bicester | A rating |
| We Care 24x7 Limited | Portsmouth | A rating |
| We Care 4 Air Ltd | Leaden Roding | A rating |
| WE CARE 4 YOU SERVICES LIMITED | London | A rating |
| We Care Homes Ltd | London | A rating |
| WE CARE NOTTINGHAM LIMITED | Nottingham | A rating |
| We Care Nursing Services LTD | Corby | A rating |
| WE CARE SERVICES LTD | ROSSENDALE | A rating |
| We Care You Plus Ltd | Cardiff | A rating |
| We Certify Group Ltd | London | A rating |
| We Change Lives | Gloucestershire | A rating |
| We Could Be Kings Ltd. | Queen's Park | A rating |
| WE CREATE SPACE CIC | Rearsby | A rating |
| WE DEFINE LIMITED | Wealdstone | A rating |
| We Deliver Local Ltd | Congleton | A rating |
| WE DESI CATERING LIMITED | Wolverhampton | A rating |
| WE DO CARE (LONDON) LTD | Cowley | A rating |
| We Do Tennis CIC | BROUGH | A rating |
| WE FIX AND TRADE LTD | OXFORD | A rating |
| We Folk Ltd | London | A rating |
| We Get Any Stock LTD | Luton | A rating |
| We Go Again Studios Ltd | Biggleswade | A rating |
| We hae meat Ltd | Girvan | A rating |
| We Know Data Limited | Wem | A rating |
| We Know Group Ltd | Hounslow | A rating |
| We Lift Ltd | Brighton | A rating |
| We Love Care Ltd | Maidenhead | A rating |
| We love Laundry Limited | London | A rating |
| We Love THIs Ltd | Leeds | A rating |
| We Organise Chaos Limited | Macclesfield | A rating |
| We Own It Ltd | London | A rating |
| We Play Limited | London | A rating |
| We Prepare Limited | Slough | A rating |
| WE PROTECT SECURITY JTR LTD | West Bromwich | A rating |
| We Reliance Care Solution Limited | Birmingham | A rating |
| We Seal Limited | Leeds | A rating |
| We Sell Cars Burton Ltd | Burton on Trent | A rating |
| WE SODA LTD | London | A rating |
| We Study In (UK) Limited | Watford | A rating |
| We Supply Food Limited | London | A rating |
| We Twelve Limited | London | A rating |
| We Vape Limited | Slough | A rating |
| WE-ARE-HR LIMITED | London | A rating |
| We-Care-Recruitment Ltd | Oxford | A rating |