Experience: I made $1m on bitcoin – and lost it again

I got caught up in the hype. Then the bubble burstUntil 2016, I ran an advertising agency in London. At our peak, we were highly successful; I had a team of 35 people, a £3m turnover and a Covent Garden office. When the agency folded, I decided to invest in bitcoin.Bitcoin is a cryptocurrency, a type of electronic cash that allows people to spend or trade via a peer-to-peer network without the involvement of banks or other intermediaries. It is a cheap, efficient way of transferring funds