The gig economy — the on-demand, mobile workforce leveraged by the likes of Uber — seems like the dream: whenever you feel like working, you simply turn on your phone, accept the jobs that you want, and ignore the ones you don't. There's no office to go to, and no boss to answer to when you haven't shown your face for a while.

But, as I would discover when I went undercover as a Deliveroo delivery driver, the gig economy is not a one way freeway to wealth and happiness, it's a two-way street.