Yes England was connected to Europe by a land bridge at one point in history, and not that long ago.
Early humans walked over the land bridge to England about 500,000 years ago and stayed there, despite the depressing winters.
They did this even as the waters rose and made escape to the Riviera impossible.
The Ancient Human Occupation of Britain project has discovered 32 pieces of black flint debitage, including a core and retouched flake, in alluvial sediments dated to about 700,000 years ago.
The artifacts discovered on the coast of the North Sea of Britain at Pakefield in Suffolk, England suggest that our human ancestor Homo erectus arrived in northern Europe much earlier than previously thought.