Like all good modern trends, “When Lambo” started as an ironic meme. For those in the know, it meant: “Do you have enough bitcoins to buy a Lamborghini yet?”

That’s how much money is swilling about in the cryptocurrency gold rush. Bitcoin made the early running, but it’s gone way past that now — in January, the total cryptocurrency market was valued at £600bn. There are more than 1,500 currencies out there, all underpinned by a transaction technology called Blockchain, which eliminates the need for a central bank.

The hoarders of this leprechaun gold are almost all men, usually between 25 and 40. There’s a fair chance the whole thing will collapse in a heap at any moment, but in the meantime lots of people