The UK is the European capital of the sharing economy, accounting for one-in-10 of the world’s companies in this new digital sector, more than Europe’s next three most prolific hubs – France, Spain and Germany – combined. However, the US is the reigning champion, producing more than half of the 865 start-ups in the sharing economy, the term for technology companies that allow people to capitalise on their unused assets such as property, skills or…