| TrueNorth Engineering Ltd. | Manchester | A rating |
| Truespeed Communications Limited | Bath | A rating |
| Truestone Construction Ltd | Croydon | A rating |
| Truestone Glenapp Castle | Ballantrae | A rating |
| TRUETEA LTD T/A CUPP HARROW | LONDON | A rating |
| Truevale Care Ltd | PORTSMOUTH | A rating |
| Truevo Payments UK Limited | LONDON | A rating |
| Truffle Bateman LTD | London | A rating |
| Truffle Brothers London Limited | Worcester | A rating |
| TruffleHunter Ltd | South Cerney | A rating |
| TruFin Labs Limited | London | A rating |
| Trulience Technologies Limited | London | A rating |
| Trulife Limited | Sheffield | A rating |
| TruLife Optics Limited | London | A rating |
| Trull Stores | Taunton | A rating |
| Trullo Limited | London | A rating |
| Truly Successive Ltd. | Solihull | A rating |
| Truly Talented Ltd | Manchester | A rating |
| Trumeter Technologies Ltd | Bury | A rating |
| Trumid Financial UK Limited | London | A rating |
| Trump International Golf Club Scotland Limited | Aberdeenshire | A rating |
| Trumpet Software Limited | London | A rating |
| TRUMPF Laser UK Limited | Southampton | A rating |
| TRUMPF Ltd | Luton | A rating |
| Trumpington St Medical Practice | Cambridge | A rating |
| TRUMPS DRYCLEANERS LIMITED | Woking | A rating |
| Trunk Flooring Ltd | Enniskillen | A rating |
| Trunk Works Ltd trading as Artic | Manchester | A rating |
| Trupay UK Payroll Services Ltd | London | A rating |
| TRUPCR Europe Limited | Manchester | A rating |
| Truro and Penwith College | Truro | A rating |
| Truro Cathedral | Truro | A rating |
| Truro Cricket Club | Truro | A rating |
| Truro Visionplus Limited T/A Specsavers Opticians | Truro | A rating |
| Truscott Manor Carehome Ltd | Ashurst Wood | A rating |
| Trusko Residential Ltd | Chelmsford | A rating |
| Trussle Lab Ltd T/A Better.co.uk | London | A rating |
| Trust Accountancy LTD | London | A rating |
| Trust Care Limited | Doncaster | A rating |
| TRUST COMMUNITY CARE LIMITED | High Blantyre | A rating |
| Trust Electric Heating | Garforth | A rating |
| Trust Group Holdings LTD | Leicester | A rating |
| Trust Homecare Solution Burton-on-Trent Limited | Burton-on-Trent | A rating |
| Trust Homecare Solution South Suffolk Limited | Sudbury | A rating |
| Trust Homecare Solutions Lincoln Limited | Lincoln | A rating |
| Trust Impact Ltd | Yr Wyddgrug | A rating |
| Trust In Care Limited | West Bromwich | A rating |
| Trust in Learning Academies | Bristol | A rating |
| Trust Loyal Care Ltd | Staveley | A rating |
| Trust Payments Limited | London | A rating |
| TRUST UK PROPERTIES LTD | UXBRIDGE | A rating |
| Trust We Care Limited | Leicester | A rating |
| Trustack Limited | Cramlington | A rating |
| TrustCloud Ltd | London | A rating |
| TrustCSR Ltd | Tetbury | A rating |
| Trusted Care and Support Ltd. | Ludlow | A rating |
| Trusted Data Solutions UK Ltd | Nantgarw | A rating |
| Trusted Games Ltd | Twickenham | A rating |
| Trusted Hands Care Solutions Ltd T/A Clarity Homecare | Stoke-on-Trent | A rating |
| Trusted Healthcare LTD | Wakefield | A rating |
| TRUSTED TECH TEAM LIMITED | London | A rating |
| Trusted Technology Limited | Nottingham | A rating |
| Trusted Vets Limited | Wolverhampton | A rating |
| TRUSTEDHOUSESITTERS LTD | Brighton | A rating |
| Trustees of the Borough Market (Southwark) | London | A rating |
| Trustees of the Diocese of Leeds | Leeds | A rating |
| Trustees of the London Clinic Ltd | London | A rating |
| TrustID Ltd | Reading | A rating |
| Trustin Foods UK Limited | Witney | A rating |
| TrustLayer Limited | Basingstoke | A rating |
| Trustlink Care Services Ltd | Stoke on Trent | A rating |
| Trustly Technologies UK Ltd | London | A rating |
| Trustly UK Limited | London | A rating |
| Trustmark Care Limited | Portsmouth | A rating |
| Trustmarque Solutions Limited | York | A rating |
| Trustmetrics Ltd | Richmond | A rating |
| TrustPharm Limited | Grantham | A rating |
| Trustpilot Ltd | London | A rating |
| TrustPortal Solutions Limited | Richmond | A rating |
| TRUSTUS CARE UK LTD | Ilford | A rating |
| Trustwave Ltd. (UK) | London | A rating |
| Trustwise Uk Limited | London | A rating |
| Trusty Parts Ltd | Hampshire | A rating |
| Trutex Ltd | Clitheroe | A rating |
| Truth Consulting | London | A rating |
| Truth Hospitality Ltd | Leamington Spa | A rating |
| TruTravels Ltd | Kingston upon thames | A rating |
| Truvai Global Ltd | Reading | A rating |
| Truvelo UK Ltd | Brentford | A rating |
| Truvi Holdings Ltd | London | A rating |
| TRUVIV LTD T/A TRUVIV | London | A rating |
| Tryambakam Digital Ltd | Bristol | A rating |
| TRYCARE LIMITED | Clayton, Bradford | A rating |
| TRYFAN UK PROPERTIES LIMITED | London | A rating |
| Tryg Forsikring A/S | London | A rating |
| Tryzens Limited | London | A rating |
| TRZ Care Ltd | Nottingham | A rating |
| TS Bath Sushi Ltd | Bath | A rating |
| TS Designs Ltd | High Wycombe | A rating |
| TS EATS LTD - T/A - Spice Village | London | A rating |
| TS Feast Limited | Dartmouth | A rating |
| TS FIVE STARS GROUP LTD | London | A rating |
| TS Food & Wine Limited T/A TS Food & Wine | London | A rating |
| TS Food and Wine | Leeds | A rating |
| TS Group (PVT) Ltd TA Esquires Coffee | Guildford | A rating |
| TS HEALTHCARE LIMITED | WOLVERHAMPTON | A rating |
| TS Imagine (UK) Ltd | London | A rating |
| TS International Solutions Limited | Watford | A rating |
| TS Lally Limited | Derby | A rating |
| TS Markt Ltd | Kent | A rating |
| TS Partners LTD | Wellington | A rating |
| TS Partnership | Epsom | A rating |
| TS TILES AND STONES LTD | Hounslow | A rating |
| TS.P+ Ltd | London | A rating |
| TS&B Contractors Limited | London | A rating |
| TS191 Ltd. | Glasgow | A rating |
| TS3 FOOD AND WINE | LONDON | A rating |
| TSA Homecare Ltd t/a Right at Home Hemel Hempstead | Hemel Hempstead | A rating |
| TSA RETAIL LIMITED T/A Lucky Star News | Birmingham | A rating |
| TSA Riley Limited | London | A rating |
| TSA SPALDING LTD | Peterborough | A rating |
| TSA TRADING LIMITED T/A SHELL GLASTONBURY | Glastonbury | A rating |
| TSABAOTH FREEDOM CENTRE | MANCHESTER | A rating |
| TSAKOS SHIPPING (LONDON) LIMITED | London | A rating |
| Tsang & Tsang Limited | Worcester | A rating |
| Tsao Dental Practice | Liverpool | A rating |
| Tsaretta UK Limited t/a Tsaretta Spice | Twickenham | A rating |
| TSB Bank plc | Edinburgh | A rating |
| TSBC Consulting ltd T/A Mason Structures | Coventry | A rating |
| TSC Entertainment Limited | London | A rating |
| TSC Hospitality Ltd | London | A rating |
| TSD (South Yorkshire) Limited T/A Oodles | Leeds | A rating |
| TSE Restaurants Limited T/A Xi'an Oxford | Oxford | A rating |
| TSG | Gateshead | A rating |
| TSG ACCOUNTANTS LTD | Rainham | A rating |
| TSG Consumer UK LLP | London | A rating |
| TSG UK Solutions Ltd | Dundee | A rating |
| TSGK Enterprises Ltd T/A Easter Pharmacy | buckhurst hill | A rating |
| TSHAANTH LIMITED | Sunderland | A rating |
| TSHALI LTD | Pontefract | A rating |
| TSHAN TRADE LTD | St. Leonards-On-Sea | A rating |
| TSI TURBO SERVICE INTERNATIONAL LIMITED | TOTTON | A rating |
| Tsight Consulting Ltd T/A Marketscience Consulting | London | A rating |
| TSIT DIGITAL TECHNOLOGIES PRIVATE LTD | London | A rating |
| TSJSMILE LIMITED | DARFIELD | A rating |
| TSK ELECTRONICA Y ELECTRICIDAD UK LIMITED | London | A rating |
| TSK TRANSPORTS LTD | Hayes | A rating |
| TSKD RETAIL LTD | Swansea | A rating |
| TSL Contractors Ltd | Isle of Mull | A rating |
| TSL Lighting Ltd | Basingstoke | A rating |
| TSL Limited | Gerrards Cross | A rating |
| TSL RETAILERS LTD | Creswell | A rating |
| TSM Engineering Consultancy Ltd | Kent | A rating |
| TSMART TRADING LTD | London | A rating |
| TSN FOODS LTD T/A DARKFIELD SUPERMARKET - FAMILY SHOPPER | DARFIELD | A rating |
| TSN Retail Ltd | Wishaw | A rating |
| TSN SOLUTIONS LTD | Staines Upon Thames | A rating |
| TSN TRADING LIMITED | Dudley | A rating |
| TSNR FOODS LTD | NOTTINGHAM | A rating |
| TSO SAS UK | London | A rating |
| Tsokov Construct Ltd | Birmingham | A rating |
| TSP 2.3 LTD t/a FRIENDS TANDOORI | LEICESTER | A rating |
| TSP LOCAL LTD | Malvern | A rating |
| TSP PARTNERS LTD | New Ollerton | A rating |
| TSP TRANSPORT LTD | Nottingham | A rating |
| TSP Wills and Estate Planning Limited | London | A rating |
| TSS L&V LTD | London | A rating |
| TSS SINGH LIMITED T/A SUBWAY | BRISTOL | A rating |
| TSSS DISTRIBUTION LTD | Aylesbury | A rating |
| TSSS Trading ltd | Lydney | A rating |
| TST Motors Limited | Nottingham | A rating |
| TST Nottingham Tyres Auto Ltd | Nottingham | A rating |
| Tsubakimoto UK Ltd | Annesley | A rating |
| Tsuki Global Limited | Sheffield | A rating |
| Tsunami Axis Ltd | London | A rating |
| Tsur Ltd | Hounslow | A rating |
| Tsurumi Pumps UK LImited | Maidstone | A rating |
| Tsuruta Architects | LONDON | A rating |
| TSYS Managed Services EMEA Limited | Milton Keynes | A rating |
| TT &GIZMO Limited | Hassocks | A rating |
| TT ELECTRONICS IOT SOLUTIONS LIMITED | Woking | A rating |
| TT Electronics Plc | Woking | A rating |
| TT Games Limited | Knutsford | A rating |
| TT HAIR TOOLS LIMITED | LONDON | A rating |
| TT Hornsey t/a The Tiffin Tin | London | A rating |
| TT International Investment Management LLP | London | A rating |
| TT Investments & Trading Ltd | Chobham | A rating |
| TT Media (London) Ltd | London | A rating |
| TT MERIDIAN LTD | LONDON | A rating |
| TT Productions Group Limited | Uxbridge | A rating |
| TT Super Limited | London | A rating |
| TT Totteridge Limited t/a The Tiffin Tin | London | A rating |
| TT Tufnell Park Limited T/A The Tiffin Tin | London | A rating |
| TT UKOFFER LTD | Manchester | A rating |
| TT Wanstead Ltd T/A The Tiffin Tin | London | A rating |
| TT&T CONSULTANCY AND TRADING LTD | London | A rating |
| TTA Management Limited | Woking | A rating |
| TTB Partners Investment Advisory Ltd | London | A rating |
| TTEC UK Solutions Limited | Belfast | A rating |
| TTEP UK&I Investments Ltd | Leeds | A rating |