| Theiventhan Sivapathasuntharam | TELFORD | A rating |
| THEKEDAR CONSTRUCTIONS LTD | Slough | A rating |
| Theleme Services Limited | London | A rating |
| THELONDONFINERY LTD | Bradford | A rating |
| THELOYALTYCO.APP LTD | Manchester | A rating |
| Them Design Limited | London | A rating |
| THEMA AI LIMITED | Worthing | A rating |
| Thema Early Years Ltd | Weybridge | A rating |
| THEMADE4U LIMITED | Hertfordshire | A rating |
| TheMathCompany Private Limited | Witney | A rating |
| THEMIS INTERNATIONAL SERVICES LIMITED | London | A rating |
| Themis Technologies Ltd | Harrow | A rating |
| THEMOBYSHOP.COM LTD | Liverpool | A rating |
| TheNetworkOne Online Limited | London | A rating |
| THEO HEALTH LIMITED | Glasgow | A rating |
| Theo Technologies LTD | Colne | A rating |
| Theobald Fox Ltd. | London | A rating |
| Theobolds Coaches & Holidays Limited | luton | A rating |
| THEOCO ACCIDENT REPAIR CENTRES LIMITED | LONDON | A rating |
| Theodo Ltd | London | A rating |
| Theodore Private Ltd | Middelton | A rating |
| Theolytics LTD | Oxford | A rating |
| Theorem EMEA Pvt Limited | London | A rating |
| THEOS (UK) LTD | Hebden Bridge | A rating |
| Theprojectbrand LTD | Guildford | A rating |
| THERA NORDIC UK LIMITED | Stamford | A rating |
| THERA VIVE PHYSIO CARE LTD | Birmingham | A rating |
| THERA-FLOW PHYSIO LTD | LONDON | A rating |
| Therabody UK Limited | London | A rating |
| Therakind Limited | London | A rating |
| Therakos (UK) Limited | Staines-Upon-Thames | A rating |
| THERAMEX HQ UK LIMITED | London | A rating |
| Theranos Real Estate Limited | Southampton | A rating |
| Therapia Beauty | Sutton Coldfield | A rating |
| Therapie Medical (UK) Limited | London | A rating |
| THERAPIES ON THAMES LIMITED | Wokingham | A rating |
| Therapy Assist LTD | Nelson | A rating |
| Therapy Paisley | Houston | A rating |
| Theravada Buddhist Trust | Sheffield | A rating |
| Thereforyou Ltd | London | A rating |
| Theresa Care Ltd | Wakefield | A rating |
| Thermacool Facilities Services Ltd | London | A rating |
| ThermaFY Group | Kelso | A rating |
| Thermal Dynamics Technical Services Ltd | Belfast | A rating |
| Thermal Earth Ltd | Ammanford | A rating |
| Thermal Energy International (UK) Ltd | BRISTOL | A rating |
| Thermal Fluid Solutions Ltd | Buxton | A rating |
| Thermal Improvements Ltd | Milton Keynes | A rating |
| Thermal Transfer Solutions Ltd | Redditch | A rating |
| Thermax Europe Ltd | Milton Keynes | A rating |
| Thermco Systems Ltd. | Washington | A rating |
| Therme Group Services (UK) Limited | Richmond | A rating |
| Therme North Limited | Manchester | A rating |
| Thermeon Ltd | London | A rating |
| Thermify Holdings Limited | LLandow | A rating |
| THERMIT WELDING (GB) LTD - A GOLDSCHMIDT COMPANY | Rainham | A rating |
| Thermix UK Ltd | Colchester | A rating |
| Thermly Limited | Doncaster | A rating |
| Thermo Electron Management Services | Hemel Hempstead | A rating |
| Thermoelectric Conversion Systems Ltd | Clydebank | A rating |
| Thermographic Measurements Co Ltd | Connah's Quay, Deeside | A rating |
| Thermographic Measurements Co Ltd | Deeside | A rating |
| THERMOPYLAE GROUP LTD | Aberdeen | A rating |
| Thermosense Ltd | Bourne End | A rating |
| THERMOTRAFFIC LTD | Suffolk | A rating |
| Thermotraffic UK Ltd | Essex | A rating |
| THERMOTRAFFIC UK LTD. | Stanford-Le-Hope | A rating |
| THERMSERVE LIMITED | Telford | A rating |
| Thermulon LTD | London | A rating |
| Therser UK | Stoke on Trent | A rating |
| THESHAWARMASHOP LIMITED | Birmingham | A rating |
| THESQUA.RE LTD | London | A rating |
| THESULTANATE LTD | CROYDON | A rating |
| TheSunniWay | Preston | A rating |
| ThetaRay Private Limited | London | A rating |
| TheTechForce Limited | Aberdeen | A rating |
| Thetford Visionplus Ltd | Thetford | A rating |
| Thetilescompany Ltd. | Wimbledon | A rating |
| THETOGLAB LTD | London | A rating |
| Theumi Ltd T/A The Umi | London | A rating |
| THEURBANDEALERSHIP LTD | Aveley | A rating |
| Theva Ventures Ltd T/A German Doner Kebab | Havant | A rating |
| thevividinc ltd | Birmingham | A rating |
| thewebtechuk Ltd | Glasgow | A rating |
| THEY WOLFSTONEEDIN LTD t/a Spar | Edinburgh | A rating |
| Theydon Bois Pharmacy Ltd | Epping | A rating |
| Theydon Property Services Limited | London | A rating |
| THG PLC | Ringway | A rating |
| THI Investments UK Limited | London | A rating |
| THIARA CONSTRUCTION LTD | southall | A rating |
| Thieme GB Limited | Tunbridge Wells | A rating |
| THILIPKANTH GANESHAMOORTHY T/A COSTCUTTER | Kent | A rating |
| Thind Building Services Limited | Dagenham | A rating |
| Thind Courier Ltd | hounslow | A rating |
| THIND M B BUILDER LTD | Dagenham | A rating |
| Thind Music UK Ltd. | Hounslow | A rating |
| Thind Retail Ltd | Essex | A rating |
| Thind Subs Ltd | Harrow | A rating |
| THINESH YOGANATHAN T/A UMA SERVICES | London | A rating |
| ThingLink UK LTD | Inverness-shire | A rating |
| THINGTRAX LIMITED | Staines-Upon-Thames | A rating |
| ThinJack Ltd | Westhill | A rating |
| Think 3e Consortium Ltd | Wellingborough | A rating |
| Think Academy International Education Limited | London | A rating |
| Think Cyber Security Ltd | London | A rating |
| Think Design Produce Ltd | London | A rating |
| Think Digital Group Ltd | London | A rating |
| Think Discount LLP | Glasgow | A rating |
| Think Employment Ltd | Grimsby | A rating |
| Think for the Future Ltd | Nottingham | A rating |
| Think Green Land ltd | Wickford | A rating |
| THINK INSIDE LTD | London | A rating |
| THINK INVESTMENTS EUROPE LLP | London | A rating |
| Think Jam Limited | Borehamwood | A rating |
| Think Publishing | London | A rating |
| Think Research | Poole | A rating |
| Think Study & Learn Limited | Manchester | A rating |
| Think Trinity Limited | Bolton | A rating |
| Think Two Design Limited T/A Basha Franklin | London | A rating |
| Think Visual Ltd | Forres | A rating |
| ThinkAnalytics Ltd | Glasgow | A rating |
| ThinkBDW Ltd | Colchester | A rating |
| Thinkbiz Limited | London | A rating |
| THINKING CULTURAL COMMUNICATION LTD | London | A rating |
| Thinking Fish Ltd | London | A rating |
| Thinking Hat Media Limited | Sutton Coldfield | A rating |
| Thinking Machine Systems Limited | London | A rating |
| THINKINVEST GLOBAL LTD | Brentwood | A rating |
| THINKLOUD LIMITED | Cardiff | A rating |
| ThinkObject Limited | Birmingham | A rating |
| Thinkproject UK Limited | Reading | A rating |
| Thinks Insight and Strategy (Britain Thinks) Limited | London | A rating |
| Thinks Insight and Strategy (Britain Thinks) Limited | Looe | A rating |
| ThinkTank Maths Ltd | Edinburgh | A rating |
| THINKWISE SOFTWARE LTD | WATFORD | A rating |
| THINNAIUK LIMITED T/A Krunk | Croydon | A rating |
| ThioTech Ltd | Liverpool | A rating |
| Thira Restaurant Ltd | Blackburn | A rating |
| THIRAVIYANATHAN MURALITHARAN T/A ALLENBY LATE SHOP | RAMSGATE | A rating |
| Third Bridge Group Limited | London | A rating |
| Third City Limited | London | A rating |
| Third Dimension AI Limited | Altrincham | A rating |
| Third Equation Ltd | Bristol | A rating |
| THIRD EYE PROTECTION LTD | London | A rating |
| Third Eye Security Ltd | Uxbridge | A rating |
| Third Financial Software Limited | London | A rating |
| Third Generation Environmentalism Ltd | London | A rating |
| Third Hand Healthcare Ltd | FARNHAM | A rating |
| Third Kind Games Limited | Leamington Spa | A rating |
| Third life care Limited | Glasgow | A rating |
| Third Man Records London Limited | London | A rating |
| Third Revolution Projects Ltd | London | A rating |
| Third Sector Design | Bickleigh | A rating |
| Third Sector Leaders Kirklees | Huddersfield | A rating |
| Third State Pizza Company Limited | Camberley | A rating |
| Third State Pizza Company Ltd | Camberley | A rating |
| Third Wave Identity | London | A rating |
| Third Way Recruitment Ltd | London | A rating |
| Thirdfort Limited | London | A rating |
| ThirdiProperty PTY (UK) Limited | Richmond | A rating |
| ThirdRails Ltd | London | A rating |
| ThirdWay Capital Limited | London | A rating |
| Thirsk Smiles LTD | Thirsk | A rating |
| Thirsty Soft Drinks Ltd | Melbourne | A rating |
| Thirty Holdings Limited | London | A rating |
| Thirty Three LLP | London | A rating |
| Thirty8 London Ltd | Herts | A rating |
| Thiru Cluster Limited | Croydon | A rating |
| THIRU FOOD & WINE LTD | Birkenhead | A rating |
| Thirumakal Kandiah T/A Cherry Tree Convenience Store (Premier) | Blackpool | A rating |
| Thirunavukkarasu Mayuran t/a Carter Convenience Store Premier | Coventry | A rating |
| THIRUTHANATHIL LTD T/A SUNNY SPICE | FOWEY | A rating |
| This and That (Manchester) Ltd T/A This & That | Manchester | A rating |
| This Bank Limited | London | A rating |
| This Day Capital Limited | London | A rating |
| This is Beyond Limited | Shepherds Bush, London | A rating |
| This Is Language Ltd | Oxford | A rating |
| This Is Molo Limited | LONDON | A rating |
| THIS IS SYNTHESIS UK LTD | London | A rating |
| THIS IS TOMMY LTD | LONDON | A rating |
| This Place Limited | London | A rating |
| THIS WAY UP ONLINE LIMITED | Sevenoaks | A rating |
| THIS WORKS EOR SERVICES LIMITED | LEICESTER | A rating |
| This Works Products Limited | Wimbledon | A rating |
| THISCOMPANY LIMITED | London | A rating |
| THISHA SUPER STORES LTD | Fleetwood | A rating |
| Thishaan Retail Limited | Lancashire | A rating |
| THISTHAT LTD | London | A rating |
| THISTHAT&OTHERS LIMITED | Manchester | A rating |
| Thistle Care Solutions Ltd | Kirkcaldy | A rating |
| Thistle Court Ops Limited | Ty Canol | A rating |
| Thistle Dental Care Limited | Aberdeen | A rating |
| Thistle Dental Lab Ltd | Aberdeen | A rating |
| Thistle Foods Ltd | Falkirk | A rating |
| Thistle Foundation | Edinburgh | A rating |
| Thistle Pharma Ltd t/a Rokshaw Laboratories | Sunderland | A rating |
| Thistle Practices Limited | Elgin | A rating |
| Thistle Practices Ltd t/a Buckie Dental Practice | Turriff | A rating |
| Thistle Seafoods Limited | Peterhead | A rating |
| Thistlemoor Medical Centre | Peterborough | A rating |