On the Bristol Channel Ice Stream

Thinking aloud (sort of) here -- and wondering whether we are starting to move towards a better understanding of what happened when the Anglian (??) Irish Sea ice stream came in from the west and penetrated the coastal zones of Devon and Somerset.

Look at the two maps above. The modelled ice streams have to match up with evidence on the ground -- insofar as it is reachable, given that in a later glaciation (Devensian) ice came out from the valleys of the Coalfield onto the Gower, the Vale of Glamorgan and even out into the area now covered by the sea, Those advances obliterated much of what was there before. But maybe Geoff Kellaway wasn't far wrong with his suggestion of three components to the ice stream?