In 1832 Insole leased the Maesmawr pit (Llantwit Fardre) to become a coal producer and shipper in his own right.
He was one of the first to open offices at the Cardiff Docks when the Bute West Dock was opened in 1839.
When his son James Harvey Insole came of age in 1842, Insole took him into partnership as George Insole & Son.

In 1844, as the Maesmawr seam was becoming depleted, they leased and revived collieries at Cymmer and in 1848 opened 36 coking ovens to supply the Taff Vale Railway Company, of which Insole was a principal promoter.
Up to 1847 the Insoles mainly supplied the coastal markets of the Bristol Channel (Bristol, Gloucester), the Cornish ports (St. Ives, Penzance, Fowey), and the Irish markets (Limerick, Dublin, Youghal, Waterford, Cork) with steam coal.
Insole continued to develop his international trade and afterwards supplied markets in France, the Mediterranean, Southeast Asia and South America and became the largest shipper of steam coal at Cardiff.

In Cardiff, Insole was associated with St John's Church in 1830 (where his daughter was baptised) and afterwards with the independent meetings at the Bethany Baptist Chapel (where his infant son was buried in 1837) and the New Trinity Congregational Chapel (making significant contributions to its rebuilding in 1846).
Insole was involved in the introduction of British Schools in Cardiff and served as a town councillor for the South Ward of Cardiff.
In 1832 Insole leased the Maesmawr pit (Llantwit Fardre) to become a coal producer and shipper in his own right. He was one of the first to open offices at the Cardiff Docks when the Bute West Dock was opened in 1839. When his son James Harvey Insole came of age in 1842, Insole took him into partnership as George Insole & Son.
In 1844, as the Maesmawr seam was becoming depleted, they leased and revived collieries at Cymmer and in 1848 opened 36 coking ovens to supply the Taff Vale Railway Company, of which Insole was a principal promoter. Up to 1847 the Insoles mainly supplied the coastal markets of the Bristol Channel (Bristol, Gloucester), the Cornish ports (St. Ives, Penzance, Fowey), and the Irish markets (Limerick, Dublin, Youghal, Waterford, Cork) with steam coal. Insole continued to develop his international trade and afterwards supplied markets in France, the Mediterranean, Southeast Asia and South America and became the largest shipper of steam coal at Cardiff.
In Cardiff, Insole was associated with St John's Church in 1830 (where his daughter was baptised) and afterwards with the independent meetings at the Bethany Baptist Chapel (where his infant son was buried in 1837) and the New Trinity Congregational Chapel (making significant contributions to its rebuilding in 1846). Insole was involved in the introduction of British Schools in Cardiff and served as a town councillor for the South Ward of Cardiff.
George Insole