| G E Caledonian Ltd - Maintenance and repair of motor vehicles |
| G Lawrie - Farming of cattle, dairy farming |
| G McWilliams - Joinery installation |
| G P B Management Consultancy - Business and management consultancy activities |
| G W R - Maintenance and repair of motor vehicles |
| Gemweld (UK) Ltd - Other building installation |
| GeoLogistics Ltd - Activities of other transport agencies |
| Gerrard & Mackie - Other business activities not elsewhere classified |
| Glasgow Prestwick International Airport - Other supporting air transport activities |
| Glenburn Miners Club - Bar |
| Glenburn Primary School - General secondary education |
| Golf (Prestwick) Ltd - Other sporting activities |
| Golf Club Professional - Manufacture of sports goods |
| Goodrich Corporation - Other supporting air transport activities |
| Grant's - Other retail sale in specialised stores |
| Green Horse - Manufacture of fertilizers and nitrogen compounds |
| GTSoft Ltd - Hardware consultancy |
| Galbraith Mcewan & Co. - Accountant |
| G.j Mcshane & Co - Accts. Auditors Tax Experts |
| Greggs Of Rutherglen - Bread Manufacturers |
| Gavin Lawrie Ltd - Miscellaneous Stone Mining |
| G H Tooling Co - Engineer |
| Globe Electrical Factors (irvine) Ltd - Wholesalers Of Electrical Good |
| Grant Florists - Florist |
| George Mccormick Coal Merchants - Coal Wholesalers |
| Golf View Hotel - Hotel |
| Gavin Lawrie (surfacing) Ltd - Road Surfacing Contractors |
| Graeme J Reid - Commercial Testing Services |