| Trio Motion Technology Limited | Tewkesbury | A rating |
| Trio Pharma Limited | Shepperton | A rating |
| TRIO SHISHA LTD | Hertfordshire | A rating |
| TRIO TRADING LIMITED | London | A rating |
| TRIO WALDEN LIMITED | Saffron Walden | A rating |
| Trioak Capital Limited | Cheltenham | A rating |
| Triodos Bank UK Ltd | Bristol | A rating |
| Triogen Ltd | Glasgow | A rating |
| TRION PHARMA LIMITED | SUTTON | A rating |
| TriOpsis LIMITED | Maidenhead | A rating |
| TRIOTECH RECRUITMENT LTD | Basildon | A rating |
| Trip Air Ticketing (UK) Limited | London | A rating |
| Trip Drink Ltd | London | A rating |
| Trip En Route Ltd | London | A rating |
| TRIP LIMITED | London | A rating |
| TripAdvisor Ltd | London | A rating |
| Tripezy Ltd | London | A rating |
| Triple 3 Healthcare Group Limited | Romford | A rating |
| TRIPLE A AFRICAN FOOD STORE LIMITED | Greenock | A rating |
| TRIPLE A BURGER LTD T/A BURGER JOINT | LONDON | A rating |
| Triple A Entertainment Group Ltd | London | A rating |
| Triple A Express Ltd | Hayes | A rating |
| Triple Care Healthcare Services Limited | Surrey | A rating |
| Triple F Chips Distribution Limited | Leeds | A rating |
| Triple J Aviation Engineering | Oxford | A rating |
| TRIPLE KEYS SPORTS LTD | Sheffield | A rating |
| Triple Line Consulting Limited | London | A rating |
| Triple M Healthcare Limited | Portsmouth | A rating |
| Triple P UK Limited | London | A rating |
| Triple Point Investment Management LLP | London | A rating |
| Triple Point Servco Limited | London | A rating |
| TRIPLE SCOOP (WALWORTH) LIMITED | Essex | A rating |
| Triple SM Limited | Corby | A rating |
| Triple Solar Ltd | Harlow | A rating |
| Triple Threat Mgmt | Exeter | A rating |
| TRIPLE-S CONSTRUCTION LTD | Slough | A rating |
| Triple1 Building Services Ltd | Stoke-On-Trent | A rating |
| Tripledot Studios Limited | London | A rating |
| TripleLift UK Ltd | Surrey | A rating |
| Tripleplay Services Ltd | London | A rating |
| TRIPLESEAL I.G. LTD | London | A rating |
| TRIPLUR LIMITED | Twickenham | A rating |
| Tripod Services Ltd | Bradford | A rating |
| Triponel Consulting | Harrogate | A rating |
| Tripp Limited | London | A rating |
| Tripplesfoods Ltd T/A Burrito Bull | Chichester | A rating |
| Tripserto Limited | London | A rating |
| Triptease Limited | London | A rating |
| Triptik Management Ltd | London | A rating |
| Tripwire International, Inc. | Maidenhead | A rating |
| Triquetra Enterprise Limited | London | A rating |
| Triratna Sarana | Powys | A rating |
| TRISHI ENTERPRISE LIMITED | Oxford | A rating |
| Trishla Foods Limited T/A Natraj | Harrow | A rating |
| TRISHOOL CONVENIENCE LTD | Essex | A rating |
| Trishool Limited T/A Pizza 1889 Cambridge | Cambridge | A rating |
| Trisk Bio Ltd | Stevenage | A rating |
| TriSpan LLP | London | A rating |
| TriSpan Services (UK) Ltd | London | A rating |
| Trisshna Ltd | London, England | A rating |
| TRISTAN CAPITAL LLP | LONDON | A rating |
| Tristan James Enterprises LTD | Mayfair | A rating |
| TRISTAN SUPERMARKET LTD | Liverpool | A rating |
| Tristel Solutions Limited | Snailwell | A rating |
| Tristone Flowtech UK Limited | Nottingham | A rating |
| TRISUL FOODS LIMITED | LONDON | A rating |
| Tritact Ltd | Twickenham | A rating |
| Tritax Management LLP | London | A rating |
| Tritech Precision Products Limited | Wrexham | A rating |
| Tritek Consulting Limited | Enfield | A rating |
| Tritium Power Solutions Limited | Coventry | A rating |
| Triton Construction | Liversedge | A rating |
| Triton Container UK Limited | London | A rating |
| Triton Investments Advisers LLP | London | A rating |
| TRITON LONDON PRIVATE LIMITED | IPSWICH | A rating |
| TRITON MEDIA LTD | Reading | A rating |
| Triton Restoration Limited | London | A rating |
| TRITON SOFTWARE LTD | Oldmeldrum | A rating |
| TritonExec Ltd | London | A rating |
| Trium Capital LLP | London | A rating |
| Trium Environmental Consulting LLP | London | A rating |
| Triumph Hotels Limited T/A Holiday Inn Bournemouth | Bournemouth | A rating |
| Triumph Learning Trust | Rugby | A rating |
| Triumph Motorcycles Limited | Hinckley | A rating |
| Triumph786 Limited | Hinckley | A rating |
| Triumphant Church International | Orpington | A rating |
| Triumphus Ltd | London | A rating |
| Triunion Limited T/A Jamaica Blue Royal Berkshire Hospital | Reading | A rating |
| Trivandi Limited | London | A rating |
| TRIVASOFT LTD | Birmingham | A rating |
| Trive Financial Services UK Limited | London | A rating |
| Trivedi Business Solutions Limited | Greenford | A rating |
| TRIVELLES GOLDCREST LTD | Rainham | A rating |
| Trivelles Hotels and Resorts Ltd | Essex | A rating |
| Triveni Care Limited | uxbridge | A rating |
| Triver Ltd | London | A rating |
| Trivet Restaurant Limited | London | A rating |
| Trivia Limited | Harrow | A rating |
| Trivium Group Limited | Hamilton | A rating |
| TRIX MEDCARE LTD | SOUTHEND-ON-SEA | A rating |
| Triyit LTD | Glasgow | A rating |
| TRK COMMERCIAL LTD | Harrow | A rating |
| TRL Limited | Wokingham | A rating |
| Trla and Company Ltd | Stourbridge | A rating |
| TRM Labs UK Ltd | London | A rating |
| TRMP LTD T/A ESSO GATTON POINT SERVICE STATION | Redhill | A rating |
| TRN Trading Ltd | London | A rating |
| TRNC LONDON REPRESENTATIVE OFFICE | LONDON | A rating |
| TROFI F&B LTD | London | A rating |
| Trogenix Limited | Edinburgh | A rating |
| Troi Limited | London | A rating |
| Troia (UK) Restaurants | London | A rating |
| Troika Consulting Ltd | London | A rating |
| TROIS FRERES CONCEPT LTD t/a Yukchinhon Japanese | Portsmouth | A rating |
| Trojan Commercial Cleaning | Leeds | A rating |
| TROJAN PIZZA LTD | Leeds | A rating |
| Trolex Ltd | Stockport | A rating |
| Tronox Pigment UK Limited | London | A rating |
| Troon Dental Studio | Troon | A rating |
| TROOP LONDON (UK) LIMITED | London | A rating |
| TROPHIES FRAMES & SCREEN PRINTING LTD | Glasgow | A rating |
| Tropic Biosciences UK Ltd | Norwich | A rating |
| TROPIC INTERNATIONAL PVT LTD | Watford | A rating |
| Tropic Skincare Limited | Croydon | A rating |
| Tropical Ices-Ayesha Foods | Bradford | A rating |
| Tropicana Products UK Ltd | Reading | A rating |
| TROPIKAL FOOD LIMITED | Bradford | A rating |
| TROSTIFY LTD | London | A rating |
| Troston Farms Limited | Bury St Edmunds | A rating |
| Trostrey Store Ltd | Cwmbran | A rating |
| Troubadour Properties Limited | London | A rating |
| Trouble Maker Inc Limited | London | A rating |
| Troup Bywaters + Anders LLP | London | A rating |
| Troupe Ltd. | Ipswich | A rating |
| Trout Hotel | Cockermouth | A rating |
| Trouw UK Ltd t/a Trouw Nutrition | Ashbourne | A rating |
| Trowbridge International Tax Services Ltd | London | A rating |
| Trowbridge Visionplus ltd ta specsavers | trowbridge | A rating |
| Trower Davies Limited | Cheltenham | A rating |
| Trowers & Hamlins | London | A rating |
| TROX UK Ltd | Thetford | A rating |
| Troy Asset Management Ltd | London | A rating |
| TROY BAR LIMITED | London | A rating |
| Troy Foods (Salads) Limited | Leeds | A rating |
| Troy IT Consultancy Limited | Ardwick | A rating |
| Troyan Motors Limited | Reading | A rating |
| TROYDEN PARTNERS LTD | London | A rating |
| TRP Consulting Ltd | Manchester | A rating |
| TRP Magazines Ltd. | London | A rating |
| TRS 24/7 Solutions Limited | Slough | A rating |
| TRSI K LTD T/A Junction Food & Wine | London | A rating |
| TRSTBL Limited | London | A rating |
| TRT Limited | Derbyshire | A rating |
| Tru Caring Ltd | Blackburn | A rating |
| TRU Electrical Services Ltd | London | A rating |
| Tru Energy Limited | London | A rating |
| TRU STREET FOOD LTD T/A TRU STREET | MANCHESTER | A rating |
| Trubell Limited T/A Starlight Linen | London | A rating |
| Truck and Wheel UK Ltd | Milton Keynes | A rating |
| TRUCK TRANS LTD | London, | A rating |
| Truck-lite Europe Ltd | Harlow | A rating |
| Truckcom Systems Ltd | Bishop's Stortford | A rating |
| Trucks & Vans NI Ltd | Newtownabbey | A rating |
| Trucksmith Limited | Uffculme | A rating |
| TRUCORE LTD | Milton Keynes | A rating |
| Trucorp Ltd | Craigavon | A rating |
| Tructyre Fleet Management Limited | Gateshead | A rating |
| True Beauty Laser Clinic Ltd | Slough | A rating |
| True Capital Limited | London | A rating |
| TRUE Consulting Engineers Limited | Kingsteignton | A rating |
| True Contracting LTD | Sandwich | A rating |
| True Digital Ltd | Bristol | A rating |
| TRUE DYNAMIC LTD | LONDON | A rating |
| True Europe LLP | London | A rating |
| True Frontier Ltd | Cambridge | A rating |
| True Green Capital Management (UK) Limited | London | A rating |
| True Homecare Limited | Stockport | A rating |
| True Lens Services Ltd | Barwell | A rating |
| True Light Construction Limited | London | A rating |
| True North Partners LLP | London | A rating |
| True Physio Ltd | LANCASTER | A rating |
| True Pubs Trading Limited | WEMBLEY | A rating |
| True Refrigeration UK Limited | Rotherham | A rating |
| TRUE SEO CONSULTANTS LTD | Cardiff | A rating |
| True Supported Living LTD | Birmingham | A rating |
| TRUE TONE HEARING SOLUTIONS LTD | Darwen | A rating |
| True Vine Fishing LTD | Conon Bridge | A rating |
| TRUE WAY CARE LIMITED | Edinburgh | A rating |
| True World Foods (UK) Ltd | Southall | A rating |
| Trueark Healthcare Ltd | Ipswich | A rating |
| TrueCommerce (Coventry) Limited | Manchester | A rating |
| Truecut Diamond Drilling Limited | Canterbury | A rating |
| Trueinvivo Limited | Portsmouth | A rating |
| TRUELANCE RECRUITMENT LTD | Leeds | A rating |
| TrueLayer Limited | London | A rating |
| TrueLayer Services Limited | London | A rating |
| TRUELINS LTD | London | A rating |
| TRUELOGIC SOFTWARE LIMITED | Wakefield | A rating |
| Trueman Court Luxury Serviced Apartments | Liverpool | A rating |
| Truemans heath filing station | Birmingham | A rating |