‘This appeal considered whether the effect of a Transfer Order, which transferred to Transport for London certain roads in London, was only to transfer the surface of the highway and sufficient sub-soil (normally called the two top spits) as is necessary for the maintenance of the surface, or whether it was to transfer to TfL the entire interest held by the council in the land on which the highway ran.’
UKSC Blog, 5th December 2018
Source: ukscblog.com