They will be buying up property in the 3rd world with it. They will become super wealthy as a result. They are buying at the bottom of the market there.
Think back at the cost of property in 1995 and now after 20 million migrants and their children started living here. The 3rd world is going to have huge numbers returned from USA, Canada, Australia and Europe. The cost of property is going to rise there like it did here.
It won't matter so much here as anything we buy and sell with crash back to pre Blair prices.
The Polish family that kept uk savings low and saved a fortune over there has had UK taxpayers via tax credits and UC for example, basically pay their mortgage and house off for them, will sell up at the top of the market, ho home and be laughing like the 3rd world lot at the lefty middle class mugs that made them rich and called their own names.