The Anglian glacial limit

Having spent a lot of time lately pondering on the Devensian and the Younger Dryas -- and on the matter of the Last Glacial Maximum or LGM -- it's time to look again at the Greatest British Glaciation of GBG.  Not many British geomorphologists tackle this issue -- maybe because information is very scanty -- and there is very little evidence on the ground to give guidance.  that is the way with ancient deposits.

The above map is a start -- from the paper written by Lionel Jackson and myself for EARTH magazine.  The crucial matter is this:  precisely where was the southern limit of glaciation located?  Watch this space....