| Company | Search On | Records | Category | Sub category |
| Gabriel & Co | Gabriel | 1 | Manufacturing | Castings |
| General Aviation Contract Co | GAC | 1 | Components | Propellers |
| Glenny & Henderson | Gadfly | 3 | Aircraft Manufacturers | |
| Government Aircraft Factories | GAF | 17 | Aircraft Manufacturers | Non UK |
| G.A.Harvey & Co (London) Ltd | GAHarvey | 3 | Manufacturing | Wind Tunnels |
| Gallay Radiator Co Ltd | Gallay | 39 | Components | Radiators |
| Galloway Engineering Co Ltd | GallowayEngineering | 1 | Engine Manufacturers | |
| Galvanising Equipment Company Ltd. The | GalvanisingEquipment | 1 | Finishes | Anti Corrosion |
| Gamage Ltd. A.W. | Gamages | 40 | Aircraft Parts | Accessories |
| Gambrells,Rowse & Snoaden Ltd | GambrellsRowse | 2 | Airfields | Air Traffic Control |
| Garrett Corporation | Garrett | 69 | Engine Manufacturers | Non UK |
| Garringtons Ltd | Garringtons | 11 | Components | Forging |
| Garuda Propeller Company | Garuda | 6 | Components | Propellers |
| Gas Accumulator Co (UK) Ltd | GasAccumulator | 2 | Airfields | Lighting |
| Gatwick Aerodrome | Gatwick | 29 | Training | Flying School |
| Gaudron Ltd | Gaudron | 4 | Aircraft Manufacturers | Airships |
| Gayter & Cresswell (Tools) Ltd | GayterCresswell | 1 | Engineering Equipment | Machine Tools |
| G. Beaton & Son Ltd | GBeaton | 10 | Manufacturing | Presswork |
| G.Corner & Co Ltd | GCorner | 27 | Manufacturing | Assemblies |
| Gear Grinding Company Ltd | GearGrinding | 5 | Manufacturing | Grinding |
| G & E Bradley Limited | GEBradley | 5 | Avionics | Test Equipment |
| General Electric Co Ltd | GEC | 227 | Role Equipment | Catering |
| G.Ellis & Co | GEllis | 3 | Airfields | Hangars |
| General Aircraft Ltd | General Aircraft | 1 | Aircraft Manufacturers | |
| General Aeronautical Co Ltd | GeneralAeronautical | 21 | Components | Propellers |
| General Aircraft Ltd | GeneralAircraft | 189 | Aircraft Manufacturers | |
| General Aviation Contractors Ltd | GeneralAviationContr | 53 | Aircraft Parts | Engine Suppliers |
| General Dynamics | GeneralDynamics | 15 | Aircraft Manufacturers | Non UK |
| General Electric | GeneralElectric | 19 | Airfields | Radar |
| General Fire Appliance Co Ltd | GeneralFire | 16 | Vehicles | Fire & Rescue |
| General Precision Systems Ltd | GeneralPrecision | 36 | Training | Flight Simulation |
| Gent & Co Ltd | Gent | 7 | Factory | Timekeeping |
| Geo Adlam & Son Ltd | GeoAdlam | 1 | Manufacturing | Sheet Metal Work |
| Geo Bray & Co Ltd | GeoBray | 2 | Components | Electrical |
| Gascoigne Co Ltd. The Geo | GeoGascoigne | 5 | Factory | Storage |
| Geographia Ltd | Geographia | 1 | Instrument Manufacturers | Flight Instruments |
| George O. James Ltd | Geojames | 4 | Ground Equipment | Covers |
| George H Alexander Machinery Ltd | GeorgeAlexander | 27 | Engineering Equipment | Machining |
| George Angus & Co Ltd | GeorgeAngus | 15 | Components | Seals |
| George Cohen Sons & Co Ltd | GeorgeCohen | 1 | Engineering Equipment | Presses |
| George H.Elt Ltd | GeorgeElt | 2 | Manufacturing | Sheet Metal Work |
| George Godfrey & Partners. Sir | GeorgeGodfrey | 147 | Components | Air Conditioning |
| George Kendrick Ltd | GeorgeKendrick | 1 | Engineering Equipment | Machine Tools |
| George Kent Ltd | GeorgeKent | 3 | Instrument Manufacturers | Fuel Systems |
| George Morgan Ltd | GeorgeMorgan | 1 | Manufacturing | Forging |
| George Taylor (Brass Founders) Ltd | GeorgeTaylor | 7 | Testing | Test Equipment |
| George L.Scott & Co Ltd | GeoScott | 1 | Components | Laminations |
| George Wailes & Co | GeoWailes | 5 | Engineering | Carburetters |
| Germ Lubricants Ltd | Germ | 3 | Lubricant Suppliers | |
| Gerrard & Co Ltd | Gerrard | 1 | Consumables | AGS |
| G.F.Tuckey | GFTuckey | 1 | Testing | Water Cooling System |
| Ghana Airways | GhanaAirways | 4 | Air Transport | Airlines |
| G.H.Gregory & Co (Plastics) Ltd | GHGregory | 3 | Materials | Plastics |
| Gieves Ltd | Gieves | 56 | Clothing | Flying |
| Gilbert Campling |
Gilbert Campling | 0 | | |
| Gilbertson & Co Ltd. W. | Gilbertson | 5 | Materials | Steel |
| Gilfillan | Gilfillan | 11 | Airfields | Air Traffic Control |
| Gillett Stephen & Co | GillettStephen | 2 | Engine Manufacturers | |
| Girling Ltd | Girling | 13 | Components | Landing Gear |
| Gittings & Hills Ltd | GittingsHills | 1 | Finishes | Primers |
| G.K.Jensen & Co Ltd | GKJensen | 1 | Factory | Lifts |
| Guest Keen & Nettlefolds Ltd | GKN | 65 | Fasteners | AGS |
| Glacier Metal Company Ltd | GlacierMetal | 4 | Materials | Metals |
| Glanmorfa Foundry & Engineering Co Ltd. The | Glanmorfa | 1 | Manufacturing | Foundry |
| Glass Fabrics Ltd | GlassFabrics | 1 | Materials | Glass Fibre |
| Glasso Mfg Co | Glasso | 5 | Chemicals | Cleaning Agent |
| Gledhill Brook Time Recorders Ltd | GledhillBrook | 66 | Factory | Administration |
| Glendower Aircraft Co | Glendower | 4 | Aircraft Manufacturers | |
| Glico Petroleum Ltd | Glico | 1 | Fuel Suppliers | |
| Global Navigation Inc | GlobalNavigation | 7 | Avionics | Navigation |
| Glos |
Glos | 1 | Aircraft Manufacturers | |
| Gloster. Gloucestershire Aircraft Co Ltd | Gloster | 294 | Aircraft Manufacturers | |
| Cheltenham And Gloucester Joint Aerodrome | Gloucester | 1 | Airfields | |
| G.L.Willan Ltd | GLWillan | 1 | Manufacturing | Castings |
| G.M.(Ottery St Mary) Engineering | GMEngineering | 2 | Components | Electrical |
| G-NAV | GNAV | 2 | Avionics | Navigation |
| G.N.Edward & Co | GNEdward | 1 | Engineering Equipment | Machine Tools |
| G.N.Haden & Sons | GNHaden | 1 | Factory | Air Conditioning |
| Gnome et Rhone. Societe des Moteurs | Gnome | 23 | Engine Manufacturers | Non UK |
| Gold Shell Ring Co Ltd. British | GoldShell | 4 | Fixtures and Fittings | AGS |
| Goldsmiths and Silversmiths Company | Goldsmiths Co | 53 | Models | Display |
| Goodmans Industries Ltd | Goodmans | 45 | Testing | Vibration Generators |
| Goodwin & Co Ltd | GoodwinCo | 1 | Manufacturing | Steel |
| Goodyear | Goodyear | 171 | Components | Landing Gear |
| Goodyer-Blackburn Ltd | GoodyerBlackburn | 1 | Manufacturing | Machine Tools |
| Gordon Watney & Co Ltd | GordonWatney | 17 | Aircraft | Engineering |
| Gosheron & Co Ltd. John | Gosheron | 21 | Manufacturing | Labels |
| Gosport Aircraft Co | Gosport | 7 | Aircraft Manufacturers | |
| Government & Ministry | Government | 56 | Recruitment | Air Traffic Control |
| G.Q. Gregory Quilter Parachutes | GQ | 178 | Survival Equipment | Parachutes |
| Graham & Co Ltd. Alfred | Graham | 1 | Airfields | Wireless |
| Grahame Ross Ltd. S | GrahameRoss | 6 | Components | Storage |
| Grahame-White Aviation Co Ltd | GrahameWhite | 204 | Aircraft Manufacturers | Flying School |
| Graphite Oils Ltd | GraphiteOils | 2 | Lubricant Suppliers | |
| Graseby Instruments Ltd | Graseby | 19 | Testing | Test Equipment |
| Grassphalte Ltd | Grassphalte | 2 | Airfields | Construction |
| Gratrix Ltd. Samuel | Gratrix | 2 | Manufacturing | Piping |
| Gravesend Aerodrome | Gravesend | 2 | Training | Flying School |
| Graviner | Graviner | 210 | Components | Fire Safety |
| Green Engine Co Ltd | Green | 91 | Engine Manufacturers | |
| Greenhill & Sons | Greenhill | 3 | Components | Transparencies |
| Green & Son Ltd. Thomas | Greens | 6 | Airfields | Maintenance |
| Greeves & Morton | GreevesMorton | 2 | Materials | Fabric |
| Gregory Air Services Ltd | Gregory | 1 | Aircraft Suppliers | Aircraft Sales |
| Gresham Lion Electronics Ltd | Gresham | 1 | Components | Electrical |
| Gresham & Craven Ltd | GreshamCraven | 1 | Components | Heaters |
| Grimaldi & Co Ltd. Adam | Grimaldi | 4 | Aircraft Manufacturers | |
| Grimes | Grimes | 2 | Components | Lighting |
| Grove Chemical Co Ltd. The | GroveChemical | 3 | Chemicals | Adhesives |
| Grumman Aircraft Engineering Corp | Grumman | 28 | Aircraft Manufacturers | Non UK |
| G & S.Brough. | GSBrough | 1 | Materials | Leather |
| Gschwind & Co. William | Gschwind | 1 | Materials | Fabric |
| G.S.Engineering Products Ltd | GSEngineering | 1 | Manufacturing | Castings |
| Gulf Air | GulfAir | 1 | Air Transport | Airlines |
| Gulfstream American | GulfstreamAmerican | 6 | Aircraft Manufacturers | Non UK |
| Guy's Calculating Machines Ltd | GuysCalc | 1 | Manufacturing | AGS |
| G.V.D.Illuminators Ltd | GVD | 3 | Airfields | Lighting |
| G.W.Pearce & Sons Ltd | GWPearce | 1 | Manufacturing | Sheet Metal Work |
| Gwynnes Ltd | Gwynnes | 9 | Engine Manufacturers | |
| Gyro & Electrical Instruments | GyroElectrical | 1 | Instrument Manufacturers | Gyroscopes |
