7 years-old child, approximately 20 to 25K per year in school, modest house (repeat modest house for UK family), say 150 to 180K per year. Car say, 30K per year. So, it eat up 50 % of your money.

The rest is for your food and I really don't know how much is your budget for booze?

Just don't tell us that you were lucky to be born ....! How do you call your place, middletop or middleunder? Lol!