To be honest, I know of only two families who sold up before 1975. Both invested in what we know as a “caravan”, but others may know as a “house trailer”. Both then went on some semi-nomadic journey to where the “need” was supposedly greater - but the location was in fact viewed as a rather comfortable place to live.
However - the novelty soon wore off once the Southern Winter set in! Also, one family received a further hurry-along once the local council found them to be living in insanitary conditions.
Far more notable is the number it those who were put off buying a house “because the end was so near.”
In their cases, the failed expectations of 1975 coincided with a quantum-leap in the price of houses. Many who could have easily afforded to purchase their own home before 1975 found themselves locked out of the market afterwards.