Ok I know it well.
It is a lovely area to live, lots of green space around, good schools, great high street and local facilities, plenty of activities for kids. I love it and wouldn't want to live anywhere else.
It is very middle class. Most of the school mums I know work, though the majority are part time. It is not all lawyers and city people, there are a fair few media / artsy / academic types around, though less than say Crouch End.
As in any relatively wealthy area there can be a bit of middle class angst - chat about 11+, tutors, Ofsted etc. It is definitely a bit of a middle class bubble.
Parents tend to be quite involved in school life so it's very easy to make friends through school if you want to, at my school at least there's a lot of social stuff happening particularly in the early years when people are trying to get to know each other.
It's very left wing (currently Labour, was Lib Dem, the Tories don't get much of a look-in, strong Remain vote on Brexit)
Hope that helps