There were 1,137 homeless reported in London [0], a city with a population of 8.8 million. SF has 7,499 [1] for a city of 870k. There are actually more homeless in SF than all of England.

[0] https://www.theguardian.com/society/2018/jan/25/rough-sleepe... [1] https://www.sfgate.com/bayarea/article/SF-s-new-count-shows-...