- G4SBusiness & industry · 190148
- GAIL's BakeryRestaurants & cafés70
- Game DigitalShops & marketplaces · 199161
- Gamer NetworkMedia, music & games · 199955
- Games WorkshopMedia, music & games · 1975
- GapFashion & accessories · 196961
- GarminTech & gadgets · 198973
- Garrard & CoFashion & accessories · 187173
- Garrard Engineering and Manufacturing CompanyTech & gadgets · 191552
- Gay TimesMedia, music & games · 198458
- Genesis MotorCars, bikes & motorbikes · 201555
- German Doner KebabRestaurants & cafés · 198964
- ghdBeauty & grooming · 200167
- Gieves & HawkesShops & marketplaces · 177167
- giffgaffEnergy, telecoms & utilities · 2009
- Gilbert RugbySport & fitness · 182358
- GilletteBeauty & grooming · 1901
- Ginetta CarsCars, bikes & motorbikes · 1957
- GinstersFood · 196945
- Glastonbury FestivalArts, culture & events · 197058
- Glen Garioch distilleryDrinks · 179755
- Glen Moray distilleryDrinks · 189758
- Glen Scotia distilleryDrinks · 183276
- Glenallachie distilleryDrinks · 196742
- Glendronach distilleryDrinks · 182648
- GleneaglesTravel & hotels64
- Glenfarclas distilleryDrinks · 1836
- GlenfiddichDrinks · 1886
- Glenglassaugh distilleryDrinks · 187439
- Glengoyne distilleryDrinks · 183345
- The GlenlivetDrinks · 1824
- Glenlochy distilleryDrinks · 189824
- Glenmorangie distilleryDrinks · 184373
- The Glenrothes distilleryDrinks · 1878
- GlobalMedia, music & games · 200773
- GlossierBeauty & grooming · 201479
- Go-Ahead GroupTravel & hotels · 198764
- Go.CompareBanks, insurance & finance · 2006
- GoHenryApps & fintech · 201164
- Golden WonderFood · 194739
- GoldsmithsShops & marketplaces · 177861
- GollanczMedia, music & games · 192773
- Good EnergyEnergy, telecoms & utilities · 200385
- GoogleTech & gadgets · 199764
- GoProTech & gadgets · 200255
- Gordon Murray AutomotiveCars, bikes & motorbikes · 201773
- Gordon's London Dry GinDrinks · 176973
- Gourmet Burger KitchenRestaurants & cafés · 200155
- GoustoFood · 201270
- Grand Central RailwayTravel & hotels · 200064
- Grant Thornton InternationalBusiness & industry · 198076
- Grant'sDrinks · 188761
- GrantaMedia, music & games · 1889
- Gray-NicollsSport & fitness · 185558
- Grays InternationalSport & fitness · 185542
- GrazeFood73
- Great Western RailwayTravel & hotels · 1833
- Greater AngliaTravel & hotels
- Green & Black'sFood · 1991
- Greene KingDrinks · 179967
- GreggsRestaurants & cafés · 193955
- Grey GooseDrinks · 199773
- GRIDSERVECars, bikes & motorbikes · 201764
- Group 1 AutomotiveCars, bikes & motorbikes · 199561
- GSKBusiness & industry · 200082
- The GuardianMedia, music & games · 182170
- GucciFashion & accessories · 192167
- GuinnessDrinks · 175985
- Gulf Oil InternationalEnergy, telecoms & utilities · 198676
- GumtreeApps & fintech · 200261
- GXOBusiness & industry · 202182
- The Gym GroupSport & fitness73
- GymboxSport & fitness · 200482
- GymsharkSport & fitness · 2012
- GüFood64
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