A lot of cross-referencing, finding studies/articles and historical archives of both for the time period (conveniently one from 1955 was available) regarding 2 bedroom house prices on average across the Kingdom, and the government’s data on minimum wages. I divided the house cost by the wage per hour for each period, and got the hours necessary to earn that much. I then made a very rough assumption of the ability to save 40% of the total earned and arrived at a more realistic timeframe to buy a house outright.

Once I had the monetary value of each thing I put them into the RBS Inflation Calculator to see their value today. Minimum wages in 1955 were equal to ~£25, but 2 bed house prices were nearly half the price they are now, so for the wages to match the housing market also they need to be ~£48. (I performed this study in 2018 but before an event involving the loss of most of my digital data. I should remake the study so you guys don’t rely on my memory alone)