DC goes to a west London girls day indie with annual fee around 24K (plus few extras)
We both work full time in tech, combined pre-tax income about £210 K (with small variations due to bonus). We have no other income and do not receive help with school fees from grand parents.
We are friendly/familiar with some of the other families and have an approximate idea of what they do. My guess is our household income will roughly be in the bottom third among other parents in the school.
Some of the other parents are in mid to senior positions in finance (investment banks, insurance, asset management, tax/audit etc), law, senior media execs, property/construction business, business owners, senior journalists. Only one doctor as far as I know. In all households, both parents work. I do not know if any of them receive help from elsewhere, but going by the jobs they hold, they probably don't need to.
Also, a small number of international families : from Hong Kong, Turkey, Ukraine etc that seem very wealthy, but I don't know what they do for a living.
On a related note, do kids at private schools feel a lot of pressure to wear designer clothes, go on expensive holidays, etc because their friends do?
There is some. Some of the holidays other DC take are conspicuously extravagant (regular social media updates don't help), some have multiple holiday homes in different parts of the world.. similarly branded clothes/bags etc. There is also a small amount of flaunting (possibly unintentional). But by no means it's the majority, maybe about 10% of the class.
DH and I are both state educated, as you can probably tell from my ignorance! We're doing ok, professional jobs with above average salaries, could definitely afford private with some sacrifices, but definitely not 'rich' or 'posh' in any way.
We have similar backgrond too and were concerned about the same thing when deciding whether to go for an independent school. We went this route for academic quality (and happy so far with the choice). I still worry about the effect on DC of being surrounded by exceptionally wealthy peers. She does notice it and we have had multiple conversations about this. So far DC seems grounded and not particularly influenced by it, she just noticed that there is a difference, while in her state primary nothing like this was visible.