"I’m guessing after living in the free school accommodation,"... we were there about 6 months and I think he paid about 10% of a normal rent on it but we didn't want to get locked into the ease of a school flat and it was pretty dire - mattress on floor whilst I was pregnant etc.
Sale of the house up North sold for just under £20k (that house sells for about £150k today - it is not in a great area). I am not sure how big the mortgage was now so I don't know what capital came out of that. The house we bought out here in zone 5 London cost £40k. They cost about £450k today for the same house. So we did both have a little bit of savings for the deposit. Whereas normal inflation over that period would be £105k today. On the other hand salaries after inflation of trainee solicitors are double in real terms what they were (presumably as people have to pay student loan repayments and very high rents) so my £6250 a year salary (20k in today's money) then would be about £50k today. And we were paying up to about 17% interest rates at one point - for our 1990 house we borrowed 4x my salary and could only manage with not just an interest only mortgage but a deferred one so part of the interest was added to the capital so it was not some straight easy ride.
You would 5% of 450k deposit which divided by 2 full time workers would be £11,250 each today.
When I qualified in 1985 our daughter was 1 and my salary rose to about £10k as I changed firms. We had baby no. 2 and I changed firms again for baby no. 3 so I was NEVER entitled to the 6 weeks at 90% pay of today as you needed 2 years of service to get it then. Then when later I had our twins I was working for myself so no SMP at all and was back taking work calls the next day.
Only 15% of people got to university in those days and my parents got for me the very tiny minimum grant but made it up to the full grant (and there were no university fees as you say but rents seemed quite high). This is one reason I have paid for 5 children 's university fees and rent as I wanted them to be as I was (I have also helped all 5 buy a first property which is why I will work until I die and have no savings or pension (other than state if I get to that age) but am content with that.
We also bought 2 buy to let properties in the 80s and sold them for about 50% losses in the 90s property crash and our then house too at a loss. My property ownership in a sense has been a veil of tears rather than making a lot of money, not helped by my divorce either as a higher earner. I paid off the mortgage last year in my 60s.
The full time nanny cost 50% of our net wages (for trainee solicitor and head of department teacher) in our first year as parents. I suppose things people might have now we couldn't like orange juice, hair conditioner, It was a different time and it is not easy to compare. I have drawn up details of my expenses and income almost every year since about 1989 so I know exactly what we spent on what in every year since then...I can see I have some calculations saved from 1985 too. Anyway we managed and we knew I would get pay rises although I was not kept on after my training so it was never an easy ride of job security for life. We also at times did a second job too.
On the baby I was fine about it. None of my babies every slept much so I felt I had hours and hours and hours with her - 1 - 4am with a baby awake breastfeeding would not be surprising for many new mothers . I didn't work late. on most days, baby latching on as soon as you get in the door, feeding almost all weekend from me - I just felt loads and loads of contact with her 365 days a year even though in working hours in the week a daily nanny was feeding her my milk from a bottle. I used to joke I went to work for a rest and it is much easier to sit at a desk being treated like a God (well not quite a God) at work than being a domestic servant - particularly once we had 3 under 4 when most of the time you are clearing up sick.
I feel I have had a very lovely balanced life although it is certainly very easy now the youngest 2 only are at home and they are 25.