How did glaciers and changing sea levels help form the English Channel?

The formation of the English Channel is the result of complex geological processes and significant fluctuations in sea level driven by the Pleistocene Epoch glaciations.12

While the channel’s structural foundation dates back roughly 40 million years, its modern development was heavily influenced by glacial activity. During the late Pleistocene (about 25,000 years ago), the growth of glaciers withdrew vast amounts of water from the oceans, causing sea levels to drop at least 300 feet lower than they are today. This lower sea level exposed a land bridge across the Strait of Dover, connecting Britain to the European continent.12

Additionally, during the Anglian-Elsterian glaciation, a massive ice-dammed lake formed in the North Sea. The subsequent overflow from this lake played a critical role in initiating the cutting of the Strait of Dover. As the climate warmed and the ice melted, rising sea levels eventually submerged the land bridge approximately 8,000 years ago, finalizing the channel's current form.31