From http://www.idealista.com/news/inmobiliario/internacional/2016/01/25/740704-el-piso-mas-barato-de-londres-es-un-estudio-de-7-m2-que-ha-costado-111-000
[spanish]
Can anyone verify this. The source is Idealista, Spain's version of rightmove. It sounds just about credible for the madness in the market, however, just becuase it has been put on the market does not mean it is going to sell.