- G o s p o r t - 1 company
- Gaerwen - 3 companies
- Gainsborough - 37 companies
- Galashiels - 14 companies
- Galston - 3 companies
- Galway - 1 company
- Gamlingay - 2 companies
- Garforth - 3 companies
- Garforth Leeds - 1 company
- Garretts Green - 1 company
- Garstang - 1 company
- Garvagh - 1 company
- Gatehead - 1 company
- Gateshead - 150 companies
- Gatwick - 10 companies
- GB-BEDS - 1 company
- GB-Berkshire - 1 company
- GB-Chester - 1 company
- Geesthacht - 1 company
- Germantown - 1 company
- Gerrards Cross - 17 companies
- Giffnock - 1 company
- Gillingham - 40 companies
- Gilmorton - 1 company
- Giltbrook - 1 company
- Girton Cambridge - 1 company
- Girvan - 1 company
- Glamorgan - 1 company
- Glasgow - 827 companies
- Glasgow City - 1 company
- Glasow City - 1 company
- Glastonbury - 16 companies
- Glaway - 2 companies
- Glenboig - 1 company
- Glenrothes - 45 companies
- Glenview - 1 company
- Glos - 12 companies
- Glossop - 35 companies
- Gloucester - 203 companies
- Gloucestershire - 68 companies
- Godalming - 54 companies
- Godmanchester - 1 company
- Godstone - 9 companies
- Golborne - 1 company
- Goldaming - 1 company
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