*banana but you choose to live in London so you go with that flow.
There's a huge other country that also has child care costs and mortgage/rent to pay where it's stil perfectly normal to have babies at 20 something and still have professional careers.
London is not the template for the whole country even if Londoners think it is. 
It's unusual where I live to have bsby 1 at 41 but it's none else's business anyway*
Absolutely. I'm not saying London is like everywhere else
But it's not about pregnancy yoga and crystals that's why people have children later in life in the SE
It's entirely possible and normal to have a family and home and professional careers in your 20s in the rest of the country precisely because London isn't the template
But it's disingenuous to suggest it's because Londoners are special snowflakes that it's the norm to have children later in life
It's acceptable to have a child at any age
In the SE it's not the norm to have a child until late 20s at the younger end of the scale, because it's not financially within reach for most
I'm not complaining, those of us who live in the SE choose to do so and thus that absolutely has a knock on effect on ability to have a home and start a family
Simply responding to the suggestion it's because of pregnancy yoga and crystals that's it's the norm for Londoners to start a family in their 20s
Not a complaint, simply an explanation