| UK Postings Ltd t/a UKP Worldwide Ltd | Aylesbury | A rating |
| UK Power Engineers Ltd | Reading | A rating |
| UK POWER GENERATORS LTD | MANCHESTER | A rating |
| UK Power Networks (Operations) Ltd | London | A rating |
| UK Power Solutions Ltd | Stonehouse | A rating |
| UK POZ LIMITED | London | A rating |
| UK Premier Fuel Limited | Norfolk | A rating |
| UK Private Capital Trade Association | London | A rating |
| UK PRIVATE HIRE (LANCS) LTD | Blackburn | A rating |
| UK Productions Ltd | Gomshall | A rating |
| UK Professional Guarding Limited | Park Royal | A rating |
| UK Properties Management Limited | West Thurrock | A rating |
| UK Property Accountants Ltd | London | A rating |
| UK PROPERTY AND INVESTMENT WEEKLY LTD | London | A rating |
| UK Qawwali Concerts LTD | Bradford | A rating |
| UK READY MIX CONCRETE LIMITED | Slough | A rating |
| UK Ready Mix Concrete Ltd | Slough | A rating |
| UK REALTY MANAGEMENT LIMITED | London | A rating |
| UK Relo Desk Limited | London | A rating |
| UK Research and Innovation | Swindon | A rating |
| UK Rose Enterprise Limited | London | A rating |
| UK SAFETY MANAGEMENT LTD | colton | A rating |
| UK Said Care Ltd | Essex | A rating |
| UK SALVAGE CAR PARTS LTD. | Tonypandy | A rating |
| UK SANDA LTD | London | A rating |
| UK Search Limited | Chesterfield | A rating |
| UK SECURITY AND EVENTS LTD | WALSALL | A rating |
| UK SELF STORAGE OPCO LIMITED | London | A rating |
| UK Sequoia International Import and Export Limited | Ilford | A rating |
| UK SHALIMAR 1 LIMITED | Bourne | A rating |
| UK Shop Fronts Ltd | Birmingham | A rating |
| UK SIGN & PRINT LIMITED | Manchester | A rating |
| UK Sitehoarding Ltd | Chertsey | A rating |
| UK SKILLS SUPPLY LTD | Luton | A rating |
| UK SKINLABS LIMITED | London | A rating |
| UK SMART SKILLS LTD | LUTON , BEDS | A rating |
| UK Smart Solutions Limited | London | A rating |
| UK Space Agency | Swindon | A rating |
| UK Speeder Consulting Ltd | Manchester | A rating |
| UK SPICE SERVICES LTD | South Cave | A rating |
| UK Sports Institute | Manchester | A rating |
| UK Spray Insulation Limited | Hayes | A rating |
| UK STAR CARE LTD | HOUNSLOW | A rating |
| UK STEP 1 LTD | LONDON | A rating |
| UK Storage Company (SW) Limited | Bridgwater | A rating |
| UK STUDY APPLICATION CENTRE LTD | London | A rating |
| UK Study Group Ltd | London | A rating |
| UK SUPPLIES LIMITED | HARROW | A rating |
| UK Taste Limited | Watford | A rating |
| UK TAX ACCOUNTANCY LTD | ILFORD | A rating |
| UK TAX MATTERS LONDON LIMITED | LONDON | A rating |
| UK TAXIS DAVENTRY LTD | Daventry | A rating |
| UK TOGETHER LIMITED | Manchester | A rating |
| UK Tool Hire Group Ltd | Ilkeston | A rating |
| UK TOOTING LIMITED T/A SUBWAY | CARSHALTON | A rating |
| UK TOP CARE LIMITED | Leicester | A rating |
| UK TRANSFER LTD | Hayes | A rating |
| UK TRAVEL BIRMINGHAM LTD | Birmingham | A rating |
| UK Travel Services(GB) Ltd | London | A rating |
| UK TREASURE LIMITED | Barking | A rating |
| UK Tribe Ltd | London | A rating |
| UK Truckcentre Ltd | Waltham Cross | A rating |
| UK UNCOUNTABLE LIMITED | Cheltenham | A rating |
| UK UTILITY FACTORY LTD | London | A rating |
| UK VAP LTD | London | A rating |
| UK VAPE PUFFS LIMITED | ASHTON-UNDER-LYNE | A rating |
| UK Vehicle Auctions Ltd | Nelson | A rating |
| UK VERSITY ONLINE LIMITED | Salford | A rating |
| UK VINE CARE LTD | Steyning | A rating |
| UK Virgimax Liquors Trading & Consulting Co., Ltd | Surrey | A rating |
| UK Visa Centre | Derby | A rating |
| UK VISA PARTNERS LTD | LONDON | A rating |
| UK Wainh Limited | Yeovil | A rating |
| UK Water Plus Ltd | Manchester | A rating |
| UK WEALTH HOLDINGS DEVELOPMENT LIMITED | London | A rating |
| UK WHEELS LIMITED | Edgware | A rating |
| UK Wise Group Ltd | Romford | A rating |
| UK WORK PERMIT CONSULTANCY LIMITED | London | A rating |
| UK WORKERS PERMIT LIMITED | London | A rating |
| UK WORLD EVANGELISM TRUST | LONDON | A rating |
| UK WS IMPORT LTD | Milton Keynes | A rating |
| UK YAAY LTD | Mildenhall | A rating |
| UK-2 Limited | Leeds | A rating |
| UK-BANGLA CONSULTANCY LTD | London | A rating |
| UK-China Culture & Education Cooperation Promotion Centre Ltd | Oxford | A rating |
| UK-EATS LTD | Bury | A rating |
| UK-India Business Council Limited | London | A rating |
| UK-MED | Manchester | A rating |
| UK-MEDU Ltd | Salford | A rating |
| UK&I CYBER RANGES ltd | Manchester | A rating |
| UK100 Cities Network Limited | London | A rating |
| UKA Auto trade LTD | Birmingham | A rating |
| UKAI LONDON LTD | LONDON | A rating |
| UKAT Group Ltd | Borehamwood | A rating |
| Ukay Khoa Manufacturing Ltd | Leicester | A rating |
| UKE ELECTRIC SERVICE LTD | London | A rating |
| UKE'S CONSTRUCTION LIMITED | Hounslow | A rating |
| UKEC International Ltd | Crowthorne | A rating |
| UKEDUCATIONWELL LIMITED | LIVERPOOL | A rating |
| UKEHUB LTD | London | A rating |
| UKEZ LTD | Southhampton | A rating |
| UKFH Limited | London | A rating |
| UKFL LTD | Eastbourne | A rating |
| UKForex Limited | London | A rating |
| UKG Technology Limited | Bracknell | A rating |
| UKGBC Limited | London | A rating |
| Ukheshe International Ltd | London | A rating |
| UKHIFU | Hewish | A rating |
| UKHOMESS LTD | Liverpool | A rating |
| UKI Limited | Stanmore | A rating |
| UKIIC Accelerator Limited | London | A rating |
| UKINSHA SERVICES LIMITED | London | A rating |
| UKINSIGHT EDUCATION LTD. | Nottingham | A rating |
| UKIoT Limited | Weybridge | A rating |
| UKiYO Republic Ltd | Manchester | A rating |
| UKKA Group Limited | London | A rating |
| UKL CARS LTD | London | A rating |
| UKLINK GREEN CLIMATE LTD | Rainham | A rating |
| UKMate Ltd | London | A rating |
| UKMEDI SERVICES LTD | HAMTON | A rating |
| UKO SHIPPING LTD | ALTON | A rating |
| Ukrainian Autocephalous Orthodox Church in GB | Rochdale | A rating |
| UKS Group Limited | Brislington | A rating |
| UKSL Trading UK Ltd T/A Subway | Rugby | A rating |
| UKTC Ltd | South Lanarkshire | A rating |
| UKTMP INTERNATIONAL LIMITED | London | A rating |
| Uktop Limited | Ealing | A rating |
| UKTV MEDIA LIMITED | LONDON | A rating |
| UKUNITY83 LIMITED | London | A rating |
| UKVK LTD | Leicester | A rating |
| UKVS Legal Limited T/A UKVS Solicitors | Rochdale | A rating |
| UKZ SERVICES LTD | Birmingham | A rating |
| UKZEN LIMITED | London | A rating |
| UL International (UK) Ltd | Basingstoke | A rating |
| UL VS Limited | Basingstoke | A rating |
| ULA Solicitors Limited | London | A rating |
| Ulavar Limited T/a Chennai Meals | Manchester | A rating |
| ULBEX UK Ltd. | Croydon | A rating |
| ULC Robotics International, LTD | Feltham | A rating |
| Ulearn Education Limited | Halifax | A rating |
| ULEMCo Limited | Liverpool | A rating |
| ULFAT'S VENUES LIMITED | BIRMINGHAM | A rating |
| ULI- The Urban Land Institute | London | A rating |
| Ulisia Enterprise Ltd. | Glasgow | A rating |
| ULITE LIMITED | London | A rating |
| ULLA TECHNOLOGY LTD | London | A rating |
| Ullah Isa Trust | Milton Keymes | A rating |
| ULLAHA LTD T/A Mexican Food, Mr.Burrito | London | A rating |
| ULLSWATER CONVENIENCE STORE | LEEDS | A rating |
| Ullysis Investment Club Limited | London | A rating |
| ULMA POLYMER CONCRETE UK LIMITED | LONDON | A rating |
| Ulster American Folk Park | Omagh | A rating |
| Ulster Carpets | Craigavon | A rating |
| Ulster Engineering Limited | Magherafelt | A rating |
| Ulster Orchestra Society Ltd | Belfast | A rating |
| Ulster Rugby | BELFAST | A rating |
| Ultima Development Ltd | London | A rating |
| Ultima Forma | Romsey | A rating |
| ULTIMA HOSPITALITY LIMITED | Derby | A rating |
| Ultimaspice Ltd | London | A rating |
| Ultimate Accounting & Tax Solutions Ltd | Barking | A rating |
| Ultimate Air Limited | Godstone | A rating |
| Ultimate Build Teams Limited | Morden | A rating |
| Ultimate Care Agency Ltd | Portsmouth | A rating |
| Ultimate Care Ltd t/a Bilton Hall Nursing Home | Harrogate | A rating |
| Ultimate Care UK Ltd | Ipswich | A rating |
| Ultimate Complex Care Ltd | Weston Super Mare | A rating |
| ULTIMATE COMPLEX CARE LTD | Weston-super-Mare | A rating |
| Ultimate Easy Solution Ltd | Luton | A rating |
| Ultimate Energy Ltd | Doncaster | A rating |
| Ultimate Goods Limited | Birmingham | A rating |
| Ultimate Highland Experience Ltd | Perth | A rating |
| ULTIMATE IMPORTS LTD | Dewsbury | A rating |
| Ultimate Independence Care Ltd | Gloucester | A rating |
| Ultimate Insulation Supplies Ltd | Stirling | A rating |
| ULTIMATE IT SERVICES LTD | London | A rating |
| ULTIMATE MANAGEMENT FACILITIES LTD | London | A rating |
| ULTIMATE POOL GROUP LIMITED | Wickford | A rating |
| Ultimate Precision Limited | Coventry | A rating |
| Ultimate Preparatory Education Limited | London | A rating |
| Ultimate Products UK Ltd | Chadderton | A rating |
| Ultimate Propco Limited | London | A rating |
| ULTIMATE REPAIR SERVICES LIMITED | Cardiff | A rating |
| Ultimate Retail Group LTD | Greenford | A rating |
| Ultimate Sports Engineering | Bury | A rating |
| Ultimate Transport Services Limited t/a Ultimate Mini Buses | Billericay, | A rating |
| ULTRA BUILDER & DRIVEWAYS LIMITED | BIRMINGHAM | A rating |
| Ultra Building Products Ltd | Newtownstewart | A rating |
| Ultra Care Clinic Limited | Sheffield | A rating |
| Ultra Care Health Professionals | Newport | A rating |
| Ultra Catering Ltd | Glasgow | A rating |
| ULTRA EDUCATION SERVICES LTD | London | A rating |
| Ultra Electronics Holdings Limited | London | A rating |
| Ultra Ice (UK) Limited | West Sussex | A rating |
| ULTRA INTELLECT TECHNOLOGIES LIMITED | London | A rating |
| Ultra International UK Limited | Chertsey | A rating |
| Ultra Marble Ltd T/A Ultra Marble | Oldbury | A rating |
| ULTRA MOBILE LTD | Glasgow | A rating |
| Ultra PCS Limited | Cheltenham | A rating |
| Ultra Sonar Systems Limited | High Wycombe | A rating |