We live in London (zone 2/3 so fairly central for families). We have a household income/wage of 95k-120k each year and it only varies because we’re both self employed.
We own our house and luckily don’t have a mortgage anymore, can afford for DD to have a pony, DS wanted to go to our local secondary school but had the option of the independent sector, as did DD who took advantage of it. We’re also very grateful that we can afford to go away 2/3 times a year (usually somewhere warm in summer for a few weeks, a European city break and Cornwall/Scotland). We also have a lot of savings and have money put aside for the children for university/adult life.
DH and I are by no means incredibly wealthy, just very comfortable.
However, I just don’t understand how people think 100K isn’t enough to live on in London comfortably. Many of DS’ friends parents earn less than us and still live lovely lives in the capital.