1. Why move to London if you're an unskilled worker? Are opportunities elsewhere even bleaker?
2. London has a huge problem with absentee property owners because London real estate is currently a hot investment. It's a feedback loop. The more rapidly London properties appreciate, the more absentee owners there will be, and the more demand will rise. Why haven't bylaws been passed to curb this? For example, why aren't residences that are unoccupied by their owner for a significant portion of the year taxed at much higher rates? It would probably be necessary to offer a renter rebate to compensate for increased rents, but this would discourage the practice of leaving residences vacant. If this doesn't actually drive prices down, at least it would prevent them from continuing to rise.
3. Why aren't the barge-lords being treated like slum-lords when the barges they run are overcrowded, full of mould, etc.? I understand it's hard to legally enforce a tenant-landlord relationship when it's all under the table, but there must be something the police can do to hassle these guys until they improve conditions.
4. Where are the government programs, volunteers, etc. that you usually see in other cities building low-cost housing? e.g. Why isn't anyone building legal barges with decent living conditions to compete with the barge-lords?