To answer the questions earlier on about why anyone on a normal salary would want to stay... I'm a keyworker in a normal salary. I used to live alone in rented and then a few years ago bought a flat with my DH and having DC. I've always felt that there are sacrifices and gains to us living in London versus living in other parts of the country. I accept a massive sacrifice of living here is living in a flat / smaller home (although our flat is actually huge in terms of floor space), we've no garden. This is the main decision to be made I think- if having a "house" matters to you then unless you're wealthy, central London is not an option. The flip side of living in a flat is that is we can access one of the most beautiful huge green spaces in the country and all the resources central London has to offer. We walk a lot and have a tube station 2 minutes away so getting around is great. Life is convenient and there are so many options for things to do, see, eat etc. We don't drive or have cars which is easier, cheaper and better for the planet. If we want to have a weekend away we can easily get a streetcar club car which is parked on our street. One aspect of suburban living I don't like (I have friends in market town type areas in the SE) is the fact that they use their cars all the time to go everywhere, sometimes multiple times a day.
Another consideration for me is that my DC can grow up in a multicultural area and be exposed to a lot of diverse experiences, people, foods etc etc, and see other non-white faces in all manner of jobs. As a result I think they grow up more engaged and mature than their counterparts in more suburban type areas (anecdotal comparison with friends' children living in places like Wiltshire, Surrey, rural Kent). My older teenage nephews (also grown up in London) for example got the tube to school from secondary and they are now very confident and streetwise in the useful sense, compared to friends' kids who are less confident and seem more sheltered, and are incredibly nervous about travelling in London. Just my opinion.
Also, another personal view, but as someone who works on the frontline with vulnerable people and does not vote Tory I would not want to live in a Tory safe seat. Others will disagree with that- perfectly entitled to do so- but for me it wouldn't be good. I have a friend who voted Labour and lives in a very safe Tory seat and says she feels frustrated by many of the opinions and conversations that come up in her social circles. I'm not saying I only socialise right Labour voters! I do have Tory voting friends! But I would feel living in a middle class largely white and overwhelmingly Tory bubble would be uncomfortable for me. This seems to apply to many of the commutable places surrounding London.
It's horses for courses and won't appeal to everyone and nor should it. Each to their own and all that. But I'm just providing an insight for those who couldn't understand why someone like a keyworker / teacher / nurse would choose to live in London.
We have looked at the types of houses we could afford in places like Kent, Surrey etc- massive and lovely. But I don't think the house alone would make up for the other things I value- for me. I'm just not excited about living in a suburban town.