I will say that, for a lot of people, renting for their entire lives is becoming the norm in the UK. Especially in London, where prices are crazy.
If you're living in London, you have to be earning a good salary to afford to buy. When even the cheapest properties seldom go for less than £500k, it is difficult to get onto the property market.
You have to have a relatively decent professional job to be able to consider it. Possibly even in a household with two such salaries.
Here is an example. I went on a date with a teacher, who lives outside of London, and she told me that she "dreamed" of making more than £50k. I kept very quiet. Jeremy Corbyn himself said something like people who earn more than £80k should be taxed heavily.
Yeah, looks like one would need ~£100k/y household income for a £500k place, which would be on the very basic side. The salary drop from London seems to be circa 20-30%, but the housing price drop off is quite a bit more, so outside of London is likely the better bet.