'Dirty money' Why people of all ages are investing in crypto

Miles, a 37-year-old NHS doctor from London, has been trying for years to persuade friends to buy cryptocurrencies.

- Jedidajah Otte

Miles, a 37-year-old NHS doctor from London, has been trying for years to persuade friends to buy cryptocurrencies. In recent weeks, the "Trump pump" to crypto prices has left them envious. "They have watched in frustration as my gamble paid off," he says.

Miles's crypto portfolio is now worth £2.3m, despite having cashed out about £600,000 earlier this year to buy a house. "It's set me up for life," says Miles, who invested £4,000 in bitcoin in 2012. "My pot fluctuates by hundreds of thousands each day, but I've been through years of volatile periods."

Miles was one of dozens of people who shared with the Guardian why they had become so-called crypto retail investors - ordinary people buying digital blockchain currencies - and how their investments had fared.