| Company | Search On | Records | Category | Sub category |
| Trans Australia Airlines | TAA | 1 | Air Transport | Airlines |
| Tabor Trego & Co Ltd | TaborTrego | 2 | Finishes | Varnish |
| Talbot Tool Co Ltd | TalbotTool | 5 | Fabrication | Jigs |
| Tampier. R. | Tampier | 5 | Components | Controls |
| Tannoy Products Ltd | Tannoy | 1 | Factory | Public Adress |
| TAP Portugese Airways | TAP | 2 | Air Transport | Airlines |
| Tarpen Engineering Co Ltd | TarpenEng | 2 | Factory | Paints |
| Taube. Etrich- | Taube | 1 | Aircraft Constructors | Non UK |
| Tautz & Co | Tautz | 1 | Clothing | Uniforms |
| Taylorcraft Aeroplanes (England) Ltd | Taylorcraft | 102 | Aircraft Manufacturers | |
| Taylor Taylor & Hobson Ltd | TaylorHobson | 60 | Engineering Equipment | Engraving |
| Taylors Aluminium & Brass Works. | TaylorsBrassworks | 1 | Manufacturing | Brass |
| Taylor & Son | TaylorSon | 1 | Aircraft Constructors | |
| Taylorsuit / Windak Baxter Woodhouse & Taylor Ltd | Taylorsuit | 1 | Clothing | Flying |
| Trans-Canada Airlines | TCA | 8 | Air Transport | Airlines |
| Tecalemit Ltd | Tecalemit | 144 | Maintenance | Hand Tools |
| Technical Improvements Ltd | TechnicalImprovements | 3 | Components | Electrical |
| Technical Platings Ltd | TechnicalPlatings | 20 | Finishes | Plating |
| Technograph Electronic Products Ltd | Technograph | 1 | Components | Electronics |
| Technoimpex. Hungarian Machine Industries Foreign Trade Co | Technoimpex | 2 | Aircraft Manufacturers | Non UK |
| Technical Rubber Co | TechRubber | 3 | Materials | Rubber |
| Teddington Controls Ltd | TeddingtonControls | 314 | Components | Controls |
| Tee Emm WWII Spoof Adverts - Pilots' Notes | teeem |
33 | | |
| Teledyne CAE | TeledyneCAE | 3 | Engine Manufacturers | Non UK |
| Teleflex Products Ltd | Teleflex | 111 | Components | Controls |
| Teleflex Morse Ltd | TeleflexMorse | 7 | Components | Controls |
| Telegraph Construction & Maintenance Co Ltd | TelegraphConstruction | 1 | Materials | Nickel Alloys |
| Telehoist Ltd | Telehoist | 2 | Manufacturing | Precision Engineering |
| Televox Ltd | Televox | 1 | Factory | Administration |
| Telex Communications Inc | Telex | 20 | Avionics | Radio |
| Tellier (Gt Britain) Co. Aeroplane | Tellier | 4 | Aircraft Manufacturers | |
| T.E.M Engineering Ltd |
TEM | 1 | Engineering Equipment | Wind Tunnel |
| Tenaplas Ltd | Tenaplas | 17 | Materials | Plastics |
| Terravia Ltd | Terravia | 2 | Aircraft Manufacturers | |
| Terry & Sons Ltd. Herbert | Terrys | 191 | Components | Springs |
| Test Equipment Ltd | TestEquipment | 8 | Instrument Manufacturers | Test Equipment |
| Texas Instruments Ltd | TexasInstruments | 9 | Avionics | Electronics |
| Thames Aviation Works. (Burtons Ltd) | ThamesAviation | 3 | Aircraft Manufacturers | |
| Thames Ironworks Shipbuilding & Engineering Co Ltd | ThamesIronworks | 2 | Engine Manufacturers | |
| Thermal Control Co Ltd | ThermalControl | 49 | Components | Fire Safety |
| Thermionic Products Ltd | Thermionic | 43 | Airfields | Air Traffic Control |
| Thermolux Glass Company Ltd | Thermolux | 3 | Factory | Transparencies |
| Thermo Plastics Ltd | ThermoPlastics | 19 | Materials | Plastics |
| Thermotank Ltd | Thermotank | 3 | Components | Air Conditioning |
| Thomas French & Sons Ltd | ThomasFrench | 14 | Weapons | Missiles |
| Thomas Aeromotor Co | ThomasAeromotor | 10 | Engine Manufacturers | Non UK |
| Thomas Bolton & Sons Ltd | ThomasBolton | 3 | Components | Copper |
| Thomas Boyd & Son | ThomasBoyd | 1 | Airport Services | Shippers & Packers |
| Thomas Bros Aeroplane Co (Inc) | ThomasBros | 11 | Aircraft Manufacturers | Non UK |
| Thomas Chatwin & Co | ThomasChatwin | 5 | Manufacturing | Machining |
| Thomas French & Sons Ltd | ThomasFrench | 14 | Weapons | Missiles |
| Thomas Goode Ltd | ThomasGoode | 1 | Engineering Equipment | Brushes |
| Thomas Howse Ltd | ThomasHowse | 1 | Chemicals | Cutting Lubricants |
| Thomas Robinson & Sons Ltd | ThomasRobinson | 16 | Engineering Equipment | Machinery |
| Thomas Smith & Sons Of Saltley Ltd | ThomasSmith | 5 | Fabrication | Forging |
| Thomas.W.Ward Ltd | ThomasWard | 1 | Engineering Equipment | Machine Tools |
| Thomas Williams & Sons | ThomasWilliams | 3 | Materials | Wood |
| Thompson Brothers (Bilston) Ltd | ThompsonBrothers | 79 | Ground Equipment | Refuelling |
| Thomson-CSF | ThomsonCSF | 2 | Airfields | Navigation |
| Thor Hammer Co | ThorHammer | 2 | Engineering Equipment | Hand Tools |
| Thorn Electrical Industries Ltd | Thorn | 55 | Components | Electrical |
| Thornhill Productions Ltd | Thornhill | 1 | Manufacturing | Precision Engineering |
| Thorn & Hoddle Acetylene Co Ltd | ThornHoddle | 2 | Engineering Equipment | Welding |
| Thomas Bolton And Sons Ltd | ThosBolton | 5 | Materials | Bronze |
| Thomas Hawkins & Son Ltd | ThosHawkins | 1 | Components | AGS |
| Thomas P. Headland Ltd | ThosHeadland | 6 | Engineering Equipment | Machine Tools |
| Thomas Sinton & Co Ltd | ThosSinton | 1 | Materials | Fabric |
| Thurston Aircraft | ThurstonTeal | 3 | Aircraft Manufacturers | Non UK |
| T.I. Aluminium Ltd | TIAluminium | 54 | Materials | Aluminium |
| Technological Institute Of Great Britain | TIGB | 18 | Training | Engineering |
| Tilghman's Patent Sand Blast Co Ltd | Tilghmans | 1 | Engineering Equipment | Sand Blaster |
| Tilley Lamp Co | Tilley | 2 | Airfields | Lighting |
| Tiltman Langley Laboratories Ltd | TiltmanLangley | 5 | Engineering Equipment | Maintenance Docks |
| Timbrell & Wright Machine Tool & Engineering Co Ltd | TimbrellWright | 1 | Engineering Equipment | Lathes |
| Timken | Timken | 123 | Components | Bearings |
| Timmins Aviation Ltd | TimminsAviation | 4 | Components | Galley |
| Timms Engineering Works | TimmsEng | 1 | Engineering Equipment | Jigs |
| Tinkertex Ltd | Tinkertex | 4 | Materials | Fabric |
| Tipsy Aircraft Co Ltd | Tipsy | 75 | Aircraft Manufacturers | |
| Titanine Emaillite Ltd | Titanine | 368 | Finishes | Dope |
| Titanium Metals & Alloys Ltd | TitaniumMetals | 26 | Materials | Titanium |
| T.J.Brooks (Autos) Ltd | TJBrooks | 16 | Manufacturing | AGS |
| T.J.Priestman Ltd | TJPriestman | 7 | Materials | Aluminium Alloys |
| TKS (Aircraft De-Icing) Ltd | TKS | 19 | Components | De Icing |
| T.Lewis & Co Ltd | TLewis | 1 | Components | Seating |
| Transmeridian Air Cargo Ltd | TMA | 9 | Air Transport | Air Charter |
| Tollerton. Nottingham Airport | Tollerton | 4 | Airfields | |
| Tormo Mfg Co | Tormo | 7 | Components | Bearings |
| Torrington Bearings | Torrington | 3 | Components | Bearings |
| Tower Machine Tools Ltd | Tower | 1 | Manufacturing | Machine Tools |
| Townson & Mercer Ltd | TownsonMercer | 1 | Instrument Manufacturers | Test Equipment |
| Trade Bodies | TradeBodies | 8 | Trade Bodies | Wool Industry |
| Transair Ltd | Transair | 1 | Maintenance | Aircraft |
| Transair Inc | TransairInc | 3 | Aircraft Parts | Non UK |
| Transall | Transall | 2 | Aircraft Manufacturers | Non UK |
| Transavia Corporation Pty Ltd | TransaviaCorp | 1 | Aircraft Manufacturers | Non UK |
| Transformer & Electrical Co Ltd | TransformerElectrical | 1 | Ground Equipment | Ground Power Units |
| Trans International Airlines | TransInternational | 1 | Air Transport | Airlines |
| Trapinex Ltd | Trapinex | 1 | Finishes | Transfers |
| Travel Agents. Bureau LepAerial | TravelAgents | 1 | Air Transport | Travel Agents |
| Trevor-Johnstone Company Ltd. The | TrevorJohnstone | 7 | Airport Services | ATC Recorder |
| Triplex Safety Glass Co Ltd | Triplex | 187 | Materials | Transparencies |
| Trix Electrical Company | Trix | 1 | Components | Electrical |
| Truflo Ltd | Truflo | 5 | Materials | Titanium |
| Trussed Concrete Steel Co Ltd. The | TrussedConcrete | 7 | Structures | Hangars |
| TUB | Tub | 2 | Finishes | Dope |
| Tubbs, Lewis & Co | TubbsLewis | 4 | Manufacturing | Cords |
| Tubeman Stainless Limited | TubemanStainless | 2 | Manufacturing | Stainless Steel |
| Tubular Rivet Co Ltd. Bifurcated And | TubularRivet | 1 | Engineering Equipment | Rivetting |
| Tucker Eyelet Co Ltd. Geo | Tucker | 11 | Fasteners | Riveting |
| Tufnol Ltd | Tufnol | 1 | Materials | Tufnol |
| Tungstone Accumulator Co Ltd | Tungstone | 7 | Components | Batteries |
| Tungum Company Ltd | TungumCompany | 33 | Manufacturing | Castings |
| Tupolev. V/O Aviaexport | Tupolev | 1 | Aircraft Manufacturers | Non UK |
| Turbomeca | Turbomeca | 9 | Engine Manufacturers | Non UK |
| Turbo-Union | TurboUnion | 17 | Engine Manufacturers | |
| Turner Brothers Asbestos Co Ltd | TurnerBrothers | 8 | Materials | Fibre Glass |
| Turner Manufacturing Co Ltd | TurnerMFG | 54 | Components | Landing Gear |
| Turner & Savage Ltd | TurnerSavage | 1 | Manufacturing | Sheet Metal Work |
| Turton, Platts & Co Ltd. George | TurtonPlatts | 3 | Manufacturing | Forging |
| Trans World Airlines |
TWA |
4 | Air Transport | Airlines |
| T.Wheeler | TWheeler | 4 | Instrument Manufacturers | Flight Instruments |
| Twining Aeroplane Co | TwiningAeroplane | 12 | Aircraft Manufacturers | |
| T.W.K.Clarke & Co | TWKClarke | 55 | Aircraft Manufacturers | |
| T.W.Palmer & Co | TWPalmer | 6 | Structures | Hangars |
| Universal Aviation Support Co | UAS | 1 | Airfields | Air Traffic Control |
| United Dominions Trust (Commercial) Ltd | UDT | 5 | Finance | Finance |
| Uhlhorn Bros Ltd | Uhlhorn | 3 | Fabrication | Machining |
| U.H.Magneto | UHMagneto | 2 | Components | Magnetos |
| Ultra Electric Ltd | Ultra | 81 | Survival Equipment | ELT Beacons |
| Umbaugh | Umbaugh | 1 | Aircraft Manufacturers | Non UK |
| Unbrako Socket Screw Co Ltd | Unbrako | 17 | Components | Fasteners |
| United Aircraft Co Ltd | UnitedAircraft | 2 | Manufacturing | Components |
| United Aircraft International | UnitedAircraftIntl | 177 | Engine Manufacturers | Non UK |
| United Airways Ltd | UnitedAirways | 2 | Air Transport | Airlines |
| United Flexible Metallic Tubing Co Ltd. The | UnitedFlexible | 1 | Components | Piping |
| United Motor Industries Ltd | UnitedMotor | 1 | Components | Spark Plugs |
| United Moulders Ltd | UnitedMoulders | 1 | Manufacturing | Mouldings |
| United Steel Companies Ltd | UnitedSteel | 20 | Manufacturing | Steel |
| Uni-Tubes | UniTubes | 6 | Components | Electrical |
| Universal Aviation Co Ltd | Universal Aviation Co | 9 | Distributors | Components |
| Universal Aircraft Services | UniversalAircraftServices | 4 | Training | Flying School |
| Universal Boilers & Eng Co Ltd | UniversalBoilers | 1 | Manufacturing | Sheet Metal Work |
| Universal Equipment (Northolt) Ltd | UniversalEquipment | 1 | Aeronautical Engineers | Assemblies |
| Universal Flying Service Ltd | UniversalFlyingService | 3 | Training | Flying School |
| Universal Power Drives Ltd | UniversalPowerDrives | 2 | Airport Services | Refuelling |
| U.T.A.French Airlines | UTA | 1 | Air Transport | Airlines |
