You literally can’t compare prices now to 1970 or 1980. The change in everything related makes it irrelevant. Just one example of many: the liberalisation of banking in the 1980s meant that people could borrow at much higher multiples than previously. Since house prices are determined by available credit, that just multiplied up the price of a house. That effect won’t reverse unless they go back to much tighter restrictions on lending multiples again.
You can make at least some level of comparisons over the post-2000s, wherein at least interest rates have never been crazy high and the banking system hasn’t been completely overhauled (much as it needed to post-2008). And over that period, the UK has been consistent with other nations, and rises have been somewhere between bond yields and equity returns. The latter should be irrelevant but it isn’t, because UK people see property as an investment