"I started working as a graduate in 1995 on £8500, even the big 6 accountancy firms as they were at the time were paying less than £20k starting in 1995. We had school leavers being paid £5500."
I think 1995 (and giving different job types) is a good place to have a look at.
According to the Bank of England inflation calculator prices have more or less exactly doubled between 1995 and December 2024. (For example something that cost £40 in 1995 would cost £80.70 in Dec 2024).
The (now) big four accountancy firms are paying around £33k for new graduates so even they haven't kept up with inflation.
I remember what my salary was in 1995 as that was the year I bought my first house. At the time, I was a graduate with a STEM degree and seven years experience (not in accountancy or anything like that).
With now having an extra 30 years experience and various promotions etc, I am earning 130% more than I did in 1995. But, inflation has doubled during that time and so, after allowing for inflation, my pay is only 21% more than it was in 1995 in real terms. Even after the promotions that I have had during that time.
.
"We had school leavers being paid £5500."
In contrast, people on low wages have done very well since the minimum wage was introduced in 1999.
Although school leavers (those under the age of 21) can still be paid a lower wage, for a typical office job (say 9 to 5 with an hour for lunch - 35 hours per week) the minimum wage is now £22,222 per year.
That person on £5,500 in 1995 is now being paid four times as much.
But I do think the big issue over the last 30 years has been the increase in housing costs.
Back in 1995 the average price of a house in England was £53k. In Nov 2024 the average price in England was £306k.
My salary certainly hasn't kept pace with that sort of increase.