| Catagories | Records | | Catagories | Records |
| T-Shirts | 516 | | Tobacconists - Retail | 305 |
| Tableware | 57 | | Tobacconists' Suppliers | 8 |
| Tailors | 603 | | Toiletries | 344 |
| Take Away Food Shops | 20806 | | Toilets - Portable | 135 |
| Tank Cleaning & Repairing | 93 | | Toning Studios | 126 |
| Tanks, Vats & Cisterns | 124 | | Tool & Equipment Hire | 452 |
| Tapes - Industrial | 19 | | Tool Design, Mnfrs & Makers | 860 |
| Tarpaulins | 129 | | Tool Merchants | 599 |
| Tartans, Kilts & Accessories | 131 | | Tool Sharpening, Repairing & Servicing | 230 |
| Tattooing & Piercing | 900 | | Tour Guides & Sightseeing Excursions | 213 |
| Tax Consultants | 716 | | Tour Operators | 1282 |
| Taxi Equipment Supplies | 54 | | Tourist Information | 857 |
| Taxidermists | 47 | | Towbars | 160 |
| Taxis & Private Hire | 9374 | | Towel Supply & Washroom Services | 100 |
| Tea & Coffee Merchants | 494 | | Town Planning Consultants | 473 |
| Technical & Commercial Illustrators | 45 | | Toy Libraries | 17 |
| Telecommunication Consultants | 512 | | Toy Shops | 1233 |
| Telecommunication Services | 1133 | | Toys & Games - Wholesale | 157 |
| Telecommunications Equipment & Systems | 1038 | | Toys, Games & Sporting Goods - Mnfrs | 255 |
| Telemarketing | 290 | | Trade Assoc & Regulatory Bodies | 206 |
| Telephone Answering & Recording Machines | 9 | | Trade Mark Agents | 42 |
| Telephone Answering Services & Message Centres | 155 | | Trade Unions | 777 |
| Telephone Card Dealers | 26 | | Traffic Management Systems | 143 |
| Telephone Equipment | 54 | | Trailers & Towing Equipment | 418 |
| Television & Radio Aerials - Suppliers & Erectors | 1268 | | Trailers - Rental & Leasing | 144 |
| Television & Radio Production Services | 921 | | Train Stations & Information | 13 |
| Television & Video Mnfrs & Wholesalers | 20 | | Training Centres | 1726 |
| Television & Video Rental | 435 | | Training Consultants | 1515 |
| Television, Video & Radio Servicing | 2516 | | Training Services | 3914 |
| Television, Video & Radio Shops | 1449 | | Transformer Mnfrs | 170 |
| Television, Video & Teletext Rental | 56 | | Translators & Interpreters | 1005 |
| Temperature Monitoring Systems Mnfrs | 89 | | Transport Consultants | 238 |
| Tennis Courts | 62 | | Transport Equipment - Mnfrs | 31 |
| Tennis Courts & Sports Surfaces - Construction | 105 | | Travel Agents & Holiday Companies | 8502 |
| Tent Mnfrs | 19 | | Travel Clinics | 17 |
| Testing, Inspection & Calibration Equipment Mnfrs | 103 | | Travel Insurance | 47 |
| Testing, Inspection & Calibration Services | 735 | | Tree Work & Forestry Services | 1999 |
| Textile Designers | 128 | | Trichologists | 31 |
| Textile Manufacturing | 717 | | Trimmers & Trimmings | 181 |
| Textile Merchants & Agents | 745 | | Trolley, Truck & Barrow Makers | 57 |
| Thatching & Conservation Crafts | 205 | | Trophies, Medals & Rosettes | 610 |
| Theatre Companies | 543 | | Tube & Tube Fitting Stockists | 214 |
| Theatres & Concert Halls | 715 | | Tube Benders & Manipulators | 101 |
| Theatrical Agencies | 283 | | Tube Bending Machinery Mnfrs & Distributors | 8 |
| Theatrical Costumes, Equipment & Supplies | 394 | | Tug & Towing Services | 19 |
| Theme Parks | 30 | | Tuition - Private | 759 |
| Thermometers & Thermostats | 23 | | Tungsten Tool Mnfrs & Distributors | 13 |
| Ticket Agencies | 189 | | Turbine Mnfrs | 25 |
| Ties & Neckwear | 214 | | Turbo Chargers | 37 |
| Tile Mnfrs | 83 | | Turfing Contractors & Turf Supplies | 434 |
| Tile Stockists | 1343 | | Typesetters | 382 |
| Tiling Contractors - Wall, Floor & Ceiling | 1248 | | Typewriter Dealers | 39 |
| Timber Framed Buildings | 176 | | Tyre Dealers | 5182 |
| Timber Merchants, Importers & Agents | 1688 | | Tyre Disposal | 2 |
| Timber Preservation Services | 186 | | Tyre Manufacturing Equipment | 18 |
| Time Recording Machines | 88 | | Tyre Mnfrs & Distributors | 74 |
| Timeshare Accommodation | 76 | | Tyre Repairs & Retreading | 67 |
| Toastmasters | 81 | | Tyre Wholesalers | 62 |
| Tobacco Importers & Distributors | 20 | | | |
| Tobacco Products - Mnfrs | 44 | | | |
| Tobacconists & Confectioners - Wholesale | 165 | | | |
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