The number of Airbnb listings in London has quadrupled in the last four years as more and more of the city’s housing stock has been gobbled up by short-term rental companies. As of May 2019, 80,770 properties in London were listed on Airbnb, with a staggering 23 percent, or 11,200, of these thought to be in breach of a legal 90-day limit in the capital.