Well, it's just the usual thing.
Back in time, when i was there, they didn't call it like this, if I can recall it correctly. It was simply the minimum wage. Looks like, they want to hide the real numbers, doesn't show so good picture about the wonderful 1st world...
https://www.livingwage.org.uk/what-real-living-wage
Several years ago, the national living wage was the real living wage. I never could earn that there. The gap looks like smaller atm, but still big.
Also counts your age. 8-10 years ago, it was 25 and over. Younger people had different minimum hourly wage numbers.
https://www.gov.uk/national-minimum-wage-rates
I think, you can draw the correct conclusions.
8-10 years ago you had to earn at least Ł2000-2500 (after tax) per month if you really wanted something from life in UK. (Nothing special, just not being another day-to-day slave.) Today, I think the minimum is between Ł3500-5000 per month.
The situation is the same across Europe. Most people only have modern slavery.
What is incredible is that they accept it as normality, and even support and protect it.
Real idiocy