Kent coastline of Kent is continuously changing, due to tectonic uplift and coastal erosion. Until about 960, the Isle of Thanet was an island, separated by the Wantsum channel, formed around a deposit of chalk; over time, the channels silted up with alluvium. Similarly Romney Marsh and Dungeness have been formed by accumulation of alluvium. Kent's principal river, the River Medway, rises near East Grinstead in Sussex and flows eastwards to Maidstone. Here it turns north and breaks through the North Downs at Rochester, then joins the estuary of the River Thames as its final tributary near Sheerness. The Medway is
History of Maidstone near the river. Paper was produced at places such as Turkey Mill and Hayle Mill. Notable enterprises included the Whatman family and W&R Balston beginning in the 18th century and what was to become the Reed group had several paper and cardboard milling plants in Maidstone. History of Maidstone The History of Maidstone and its environs goes as far back as Mesolithic times. It has seen settlement by the Romans and the Normans and played its role in pivotal moments of English history such as the Peasants' Revolt and the English Civil War. It has also hosted a large Army