I've said it before but I think the advent of working from home should be seen as a huge opportunity for improved regionalisation of white collar jobs which can bring wealth to more areas of the country. There really is no reason these days for a lot of people to be in London 7 days a week. It is already happening naturally but in a smaller way, more senior folks I work with these days live quite a long way out of the city and come in a few days per week.
The more time people spend outside of London, the more of their money is also spent outside of London, which brings more commerce to other areas of the country.
I think this could potentially be harnessed and promoted further. The people in professional services who still live near to the centre of London are the younger folks, many of which have been brain drained from other parts of the country. They don't have the position or means to commute down from Yorkshire once a week, so they moved here. I did this myself 6 years ago. These are people who often go on to be high earners. If we can find a way to stop these young people from having to move permanently in the first place, I think it could do a lot of good.