Gaza one of the most densely populated places in the world?

The BBC love to tell us that Gaza, sometimes narrowed down to Gaza City,  is one of the most densely populated places in the world. The BBC slipped up today with the above graphic. So London is more densely populated than Gaza and Singapore way more densely populated than Gaza City. Do try and remember that the next time the BBC repeat that Gaza is one of the most densely populated places in the world, because the BBC will repeat that canard again soon.