This GIF shows the evolution of the Scandinavian Ice Sheet (of which Britain was a part). This animation is based on an ice-sheet reconstruction using glacial geomorphology and geochronology (Hughes et al., 2016).
This video introduces the land bridge that was present between Britain and France during glacial periods. A large glacial lake formed north of the land bridge.
The landbridge was destroyed during the Anglian glaciation, some 400,000 years ago.