Richmond has by tradition been a base for liberal party support - but it was always a marginal constituency at best as it's not all Richmond Green (RIP Sir Dickie). It also has a continual changing population being a commuter belt area, especially young people, in recent time aspirational city types tending to be Tory voters.
Being by Heathrow (and a lovely place) it's also very cosmopolitan - meaning that although Heathrow pollution and noise is a big issue, the hostile threats to these people and their friends and neighbours of Brexit is far bigger right now.
Being by Heathrow (and a lovely place) it's also very cosmopolitan - meaning that although Heathrow pollution and noise is a big issue, the hostile threats to these people and their friends and neighbours of Brexit is far bigger right now.