| UPL Europe Limited | Sandbach | A rating |
| UPL Marketing | Brentwood | A rating |
| UPLAND LODGES NORTH LTD Trading as Copland Hotel | Glasgow | A rating |
| UPLAND SOFTWARE UK LIMITED | London | A rating |
| Uplands & Mumbles surgery | Swansea | A rating |
| Uplands Care Centre Limited | Westcliff-On-Sea | A rating |
| Uplands Care Home T/A ABBEY UPLANDS CARE HOME LIMITED | London | A rating |
| Uplands Nursing Home | Birmingham | A rating |
| UPLIFT HYDRAULICS LIMITED | LONDON | A rating |
| Uplift Physio Ltd | Stretford | A rating |
| Uplifting Spirits Ltd | Dundrum | A rating |
| Upload Media LTD | Hoxton | A rating |
| UPLUS LTD | Manchester | A rating |
| UPM Kymmene UK Ltd | Irvine | A rating |
| Upmart News Agent Ltd | Croydon | A rating |
| Upminster Cricket Club | Upminster | A rating |
| UPODESH LIMITED | Birmingham | A rating |
| UPP Consultants Ltd | London | A rating |
| UPP Group Holdings Limited | London | A rating |
| Uppal Convenience Stores Limited | Sandiway | A rating |
| UPPAL GROUP VENTURES LIMITED T/A CLEANSERV | TAMWORTH, | A rating |
| Uppal Sweet Centre Limited | Wolverhampton | A rating |
| Upper Beeding Baptist Church: The Hub,Beeding | Steyning | A rating |
| UPPER BERKELEY CARE LTD | FELTHAM | A rating |
| Upper Canada UK Limited | London | A rating |
| Upper Killay Congregational Church | Swansea | A rating |
| UPPER NORWOOD GROUP PRACTICE | LONDON | A rating |
| Upper Shirley High School | Southampton | A rating |
| UPPER WOODCOTE CATERING. T/A LORD ROBERTS ON THE GREEN LTD | Purley | A rating |
| UPPERCLASS FASHIONS LIMITED | London | A rating |
| Uppercut Deluxe Co Ltd. | Eastleigh | A rating |
| Uppermill Cricket & Bowling Club | Oldham | A rating |
| Upperplumbers Ltd | London | A rating |
| Uppingham Community College | Uppingham | A rating |
| Uppingham School (Company Registration Number 8013826) | Uppingham | A rating |
| UPPower Ltd | Broxbourne | A rating |
| UPPUM MULAKUM LIMITED | Wirral | A rating |
| Uprated Ltd | Chandlers Ford | A rating |
| upReach Charitable Company | London | A rating |
| Uprise Up Limited | Chesham | A rating |
| UPROOT TECHNOLOGIES LTD | Milton Keynes | A rating |
| UPS Ltd | Middlesex | A rating |
| UPSCALE CARE LIMITED | London | A rating |
| Upscale Consultants Ltd | Kennington | A rating |
| Upscale Utilities Limited | Kent | A rating |
| Upscope Ltd | London | A rating |
| Upside Studio Ltd | London | A rating |
| Upsidevalue Renewables Group Ltd | London | A rating |
| UPSKILL CAMP LTD | Hatfield | A rating |
| Upskillhubs Ltd | London | A rating |
| Upslide UK Limited | London | A rating |
| Upsolve AI | London | A rating |
| Upsqill Ltd | Dagenham | A rating |
| Upsteps Services Ltd | London | A rating |
| Upstream Outcomes Ltd | Hessle | A rating |
| Upstreamly Ltd | London | A rating |
| UPSTREET MINI MART LTD | CANTERBURY | A rating |
| Uptake Strategies Limited | Ascot | A rating |
| Uptick Software UK Limited | London | A rating |
| Uptime Labs Ltd | London | A rating |
| Uptime Professional Services Limited | London | A rating |
| UPTITUDE LTD | London | A rating |
| Upton Care Plus Ltd | Slough | A rating |
| UPTON FISH BAR LIMITED | Widnes | A rating |
| UPTON HOUSE | SANDWICH | A rating |
| UPTON LIVING LIMITED | LONDON | A rating |
| Upton Mini Mart | WAKEFIELD | A rating |
| Upton Park Dentalcare | London | A rating |
| Upton Park Fish Bazaar & Halal Meat | London | A rating |
| Upton Stores Limited | Poole | A rating |
| Upton Surgery | Upton-Upon-Severn | A rating |
| Upton Vale Baptist Church | Torquay | A rating |
| Upton-Hansen Architects Limited | London | A rating |
| Uptown Dry Cleaners (Lon) LTD | London | A rating |
| Uptown Heron Restaurant Ltd T/A Cosmo Eastbourne | Eastbourne | A rating |
| UPTOWN STORES LTD | STOCKPORT | A rating |
| UPVC Spray Painters Ltd | Bradford | A rating |
| UPVC WINDOWS & DOORS PROFESSIONAL LTD | Manchester | A rating |
| UPVEST SECURITIES LTD | London | A rating |
| Upvolt Ltd | London | A rating |
| Upwards Care Solutions Limited | Manchester | A rating |
| Upwell Health Centre | Wisbech | A rating |
| Upwell Street Surgery | Sheffield | A rating |
| Upwind Security UK Ltd | Belfast | A rating |
| UR BUILDERS LIMITED | London | A rating |
| UR Care Ltd T/A Deshi Boutique | London | A rating |
| Ur Choice Care Limited | Norwich | A rating |
| UR FAST FOOD LTD | Dagenham | A rating |
| Ur Hands Care Ltd | Luton | A rating |
| ur star choice ltd | Manchester | A rating |
| UR Unified IT Solutions Limited | Reading | A rating |
| UR-PLACE.COM LIMITED | Bolton | A rating |
| Uralensis Innov8 Ltd | Carlisle | A rating |
| Urang Property Management Ltd | London | A rating |
| URAV CATERING LIMITED | Woking | A rating |
| URAY LTD t/a Joyces Convenience Store | Burnley | A rating |
| URB (OADBY) LTD | OADBY | A rating |
| URBACON TECHNOLOGIES & SERVICES LTD | Dartford | A rating |
| Urbacon Trading & Contracting UK Ltd | London | A rating |
| Urban Air Port Limited | London | A rating |
| Urban Airship UK Limited | London | A rating |
| Urban Boarding UK Ltd Trading as UBHOMES | Edinburgh | A rating |
| URBAN BRASS HARDWARE LTD | LONDON | A rating |
| Urban Burgers Group Limited | Doncaster | A rating |
| URBAN CARE SYSTEMS LTD | Birmingham | A rating |
| Urban Choola Limited TA Urban Choola | Sheffield | A rating |
| Urban Circle Newport | NEWPORT | A rating |
| URBAN CONCEPT DESIGN & BUILD LTD | Bolton | A rating |
| Urban Construction Limited | Doncaster | A rating |
| Urban Creation Ltd | Bristol | A rating |
| URBAN DECOR SOLUTIONS LTD | London | A rating |
| Urban Edge Architecture Limited | Stamford | A rating |
| Urban Environments Limited | Sevenoaks | A rating |
| Urban Excess Limited | London | A rating |
| Urban Facilities Ltd | London | A rating |
| URBAN FEAST LTD T/A Dresden Doner | BIRMINGHAM | A rating |
| Urban Fine Art Ltd T/a Brown & Rosie | Buckinghamshire | A rating |
| Urban Flavours Ltd | Southsea | A rating |
| URBAN FOOD GROUP LTD | Hayes | A rating |
| URBAN FOOD STREET LIMITED | Slough | A rating |
| Urban Foresight | Newcastle upon Tyne | A rating |
| Urban Front Ltd | Chesham | A rating |
| URBAN GREEN SPACE LIMITED | SALFORD | A rating |
| Urban Green Space Ltd T/A Urban Green | Manchester | A rating |
| URBAN HOUSING LTD | Greenford | A rating |
| Urban Innovations Ltd | Belfast | A rating |
| Urban Inns Limited | Burnham | A rating |
| Urban Intelligence Ltd | Bristol | A rating |
| Urban Jungle Services Ltd. | London | A rating |
| URBAN KARMA GB LIMITED | Coventry | A rating |
| Urban Key London | London | A rating |
| Urban Kohinoor Ltd | Bristol | A rating |
| Urban Leisure NW6 Ltd | London | A rating |
| URBAN LINK ESTATES LIMITED T/A URBAN LINK | Walsall | A rating |
| URBAN LOOK FASHION LTD | Manchester | A rating |
| URBAN MASALA LIMITED | BRISTOL | A rating |
| URBAN MASSAGE LTD | LONDON | A rating |
| URBAN MOBILE LTD | WEYMOUTH | A rating |
| Urban Movement Limited | London | A rating |
| URBAN NEST INTERIORS LTD | Solihull | A rating |
| Urban Partners Management UK Limited | London | A rating |
| URBAN PLAN CONSULTANTS LTD | Hove | A rating |
| URBAN PROJECTS BUREAU LTD | LONDON | A rating |
| Urban Promise UK | Romford | A rating |
| URBAN PROPERTY LOUNGE LTD | SHEFFIELD | A rating |
| Urban Property Refinement | Manchester | A rating |
| Urban Quaters Ltd | Bradford | A rating |
| Urban Rest UK Ltd | London | A rating |
| Urban Restaurants Group Ltd | Doncaster | A rating |
| Urban Rose Beauty Limited | London | A rating |
| URBAN SAIGON LTD T/A URBAN ORIENT | London | A rating |
| Urban Science International Ltd. | Reading | A rating |
| Urban Spectrum Property Management Ltd | London | A rating |
| URBAN SPICE BISTRO AND TAPAS LTD | Milcombe | A rating |
| Urban Trade Frames Ltd | Birmingham | A rating |
| Urban Wilderness Limited | Leeds | A rating |
| urbanbubble | Manchester | A rating |
| Urbanchain HUB CIC | Manchester | A rating |
| UrbanChain Ltd | Manchester | A rating |
| URBANE MANAGEMENT SOLUTIONS LIMITED | London | A rating |
| Urbanist Architecture Ltd | London | A rating |
| Urbanomic Media Ltd | Falmouth | A rating |
| Urbanomy Limited | Crodyon | A rating |
| URBANPOINT PROPERTY MANAGEMENT LTD | New Malden | A rating |
| UrbanTide Limited | London | A rating |
| Urbaser Ltd. | Cheltenham | A rating |
| Urbiana UK Ltd | London | A rating |
| Urbis Schreder Ltd | Basingstoke | A rating |
| URBN UK LTD (Divisional brands Urban Outfitters and Anthropologie) | London | A rating |
| Urbosa Ltd | Horsham | A rating |
| URC MANAGEMENT LTD | London | A rating |
| URENCO LIMITED | London | A rating |
| Urgent Care 24/7 Ltd | Ashton-Under-Lyne | A rating |
| Urgent Dental Care Ltd | Rochdale | A rating |
| Urgent Electrical Services Limited | Nottingham | A rating |
| URGENT RESPONSE HEALTHCARE LTD | LONDON | A rating |
| URGO LIMITED | Loughborough | A rating |
| Uria Menendez Abogados S.L.P. | London | A rating |
| URJA IMPEX LTD | Feltham, | A rating |
| URMI WAXING PARLOUR | London | A rating |
| URMIKRUPA LIMITED | Croydon | A rating |
| Urmston Spice Lounge Ltd | MANCHESTER | A rating |
| Uroojs Hair and Beauty | Bradford | A rating |
| Urpharm ltd | Rugby | A rating |
| Urquhart & Hunt | Bruton | A rating |
| URS CHOICE LTD | Hornchurch | A rating |
| URSOLUTIONS LTD | London | A rating |
| Urvee Limited | Bournemouth | A rating |
| URVI SHAH & JILNA SHAH T/A CAPE HOUSE DENTAL PRACTICE | MIDDLESEX | A rating |
| URWA ZAHOOR LIMITED | Slough | A rating |
| Urwin (Oxford) Ltd | Oxford | A rating |
| US & HHM Limited | Bradford | A rating |
| US Apparel (UK) Ltd | Blackburn | A rating |
| US BEDWORTH FOOD & WINE PET CITY LTD | BEDWORTH | A rating |
| US Booking Services Ltd | Glasgow | A rating |
| US Food Ltd t/a Smoky Boys | Wakefield | A rating |
| US Market Trends Ltd | London | A rating |
| US Tax & Financial Services Ltd | London | A rating |
| US TECH SOLUTIONS LIMITED | London | A rating |
| US-UK Educational Commission (US-UK Fulbright Commission) | London | A rating |