Once upon a time, veganism was considered a fringe movement – but not anymore. The number of vegans in Britain quadrupled between 2014 and 2019, according to the Vegan Society, while the global vegan women’s fashion market has been valued at almost $400bn (£307bn). Interestingly, vegan footwear accounts for 41.3 per cent of that total. We’re moments away from Earth Day, celebrated every year on...