HS2 is a new railway to connect London and Birmingham; to facilitate the flow of commuters in and out of London from the nearby north. This is a major engineering project which will have interesting foundation implications. Its interesting from the LiB point of view because it will be built in the 'Loess Affected Zone' of SE England. Some preliminary studies (Assadi-Langroudi 2016) have indicated that the Hertfortshire loam sequence which HS2 will cross is very similar to the loessic situation at Ospringe. The LAZ reaches just about to Birmingham and thus loess foundation problems might be encountered. The loess problem will not be as acute as it was with the estuary airport but it will require consideration .
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