This is an important report on, and interpreation of, new offshore data relevant to the reconstruction of MIS 6 glaciation of the North Sea. The interpretations are largely entirely logical and valid but I feel that the authors do not quite make the most of this important database in terms of implications for former glacier dynamics. A significant issue pertaining to the glaciation styles in the North Sea is the potential of surging versus normal active ice recession - this has been debated often for the MIS 2 glaciation and has been re-invigorated by the increasing amounts of offshore data becomong available. Particularly pertinent are the occurrences of large glacitectonic thrust masses and widespread ice  stagnation evidence (the latter not as convincingly demonstrated as the former in this paper), both diagnostic of surging glacial landsystems. The authors opt for active recession but the evidence begs further evaluation in this respect.  In terms of details on glacitectonic landforms, the authors might also want to consult some recent literature on the development of hill-hole pairs, whereby thrust masses aligned parallel to basins are termed paraxial ridges  and are part of the overall development of hill-hole pair development and hence are not mutually exclusive with ridges aligned perpendicular. 

I have added a number of queries and corrections on the pdf of the manuscript, which I attach here.