I've been sent the following email from a journalist at Cambridge News - they are writing an article about these statistics about SAHM / working mothers (have they never been on AIBU
)
Anyway - Local Editors don't speak for Mumsnetters so I thought I start a thread & see if you've got any opinions ... 
I'm currently working on a story about a recent study which found that 43 per cent of mothers in the UK are now the breadwinners for their household, contributing 50 per cent or more to the household income.
However at a local level only 29 percent of Cambridge mothers are the breadwinners and they contribute only 34 per cent to the household income on average.
What do you think about these statistics?
Why do Cambridge mother's contribute so little to the household income compared to other cities despite earning more than most (Cambridge mothers placed 7th out of 21 cities in average incomes)?
What does this mean for local mothers?
According to the study Cambridge mothers play a large part in making decisions about choosing energy suppliers, bank accounts, morgage providers, how and when bills are paid, mobile contracts and buying a car.
What do you think about this?