The best way to solve this issue, open a joint bank account,
husband send 60% of your salary into it.
wife send 50% of your salary into it.
Use the money for the family.
This one works better.
The UK isn't somewhere you will marry a girl who Believes her money is her money and yours is for the family. Bills increases as your family increase. You need someone who wants to also contribute in building up her family.
If not bills will definitely swallow all your money and you will be living from hand to mouth from paycheck to paycheck