- Ground and Water Ltd - London
- Groundwork London - London
- Groundwork London - London
- Group Se7en Events - London
- Groupcall - London
- Grove Group UK - London
- Growth Spin Limited - London
- Gryphon Property Partners - London
- GSD Painting & Decorating Contractors - London
- Guaranteed Leaflet Distribution - London
- Guard Security Systems - London
- Guerilla Communications - London
- Gundry & Ducker Ltd - London
- Guru Systems Ltd - London
- Gutters Wimbledon - London
- GVA Commercial Property Agents - London
- GVA Commercial Property Consultants - London
- GW Wiring Products Ltd - London
- H & H Fire Ltd - London
- H C T Europe Ltd - London
- H Crowther Ltd - London
- H I B - London
- H I S Contracts - London
- H I V I-base - London
- H J Spiller Hire Ltd - London
- H Lilley & Co. Ltd - London
- H R Higgins Coffee-Man Ltd - London
- H S Electrical Services Ltd - London
- H S French Flint Ltd - London
- H2 Properties Services Ltd - London
- Hackney Gutter Cleaning - London
- HAE Ltd - London
- Hagstone Consulting Limited - London
- Haiken Global Ltd - London
- Hair Development UK - London
- Hair Organics - London
- Hairoic Hair - London
- Halcon packaging - London
- Hall Ellis Solicitors - London
- Hallmark Blinds Ltd - London
- Hallmark Catering Hire - London
- Halo Financial - London
- Halstead Associates - London
- Hamar Acrylic Fabrications Ltd - London
- Hamilton Ice Sculptors - London
- Hampton Web Management Systems Limited - London
- Hanaco Ltd - London
- Hancock Industrial Access Ltd - London
- Hancocks & Co Jewellers Ltd - London
- Hand Embroidery UK - London
Companies 1701 to 1750
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