Libdems will probably do ok, especially in the south where Labour conceded tactically so they're almost sure to come third. If they come second that'll shake the foundations, because that gives massive majority rule to centrists to a country that if we're honest is traditionally more conservative.
Tbh though, shift right is so prevalent, this could be considered consistency. A Tory voter of 1980 could vote modern labour without moving on the left/right scale at all.