The disability part is definitely an important issue I had not considered before. As for the housing cost I worked out the amount based on food and a room for one person in London. It's doable at £550. You won't be incredibly comfortable but you will have enough food and decent shelter at no cost to you. If you have a partner (so two UBI's to work with) finding a 1 bedroom apartment within that budget is also doable in Zone 4/5/6. And of course we're talking about the most expensive part of the UK. I know someone who has bought a 2 bed apartment in Manchester with a mortgage of around £600pm. Easy for 2 people on a UBI of £550 to manage. Generally I'm very against the idea of poor people being forced out of a city due to it becoming unaffordable but it seems like a fair trade off for a UBI. You can take that and live anywhere else in the country without working or if you want to stay you don't need a high income job, just an average wage to supplement the UBI. It would also be interesting to see how a UBI would effect the cost of private rentals in a city like London. I'm sure a lot of people who don't need to live in London for work anymore would leave and landlords would be less interested in income and more interested in good long-term tenants.