In 2020, Joshi Herrmann was going back to his roots.  The British journalist was living in Brno in the Czechian region of Moravia, learning the language that two of his grandparents – both Czech Jews – had spoken in generations past. But his stay was curtailed by the pandemic, which landed him back in the UK. “I was at a loose end, I was doing a bit of freelancing, writing bits for The Times, The Guardian, The Telegraph but I didn’t have purpose in life at that point in terms of my writing,” the thirty-something tells The Currency, clad in…