Sometimes, good investment can be a case of love, not money. Throughout his time at Manchester United, Sir Alex Ferguson’s love of wine was almost as renowned as the notorious ‘hairdryer’ treatment. Favoured managers would be invited to share a post-match glass with Sir Alex, and many rivals, such as Jose Mourinho, made a point of supplying their own vintage in tribute. No passing hobby, Ferguson built a formidable collection over twenty years of travelling the globe: an auction of his cellar raised £2.2m in 2014. His foray into horse racing, however, proved less successful when a dispute over race horse Rock of Gibraltar nearly ended his time at the club.