How did I know what to invest in? I asked my wife

Some investors rely on statistics, but I prefer the evidence of my eyes and ears and my family and friends to identify which shares to buy. For example, like most people a decade ago I hadn’t heard of Fever-Tree Drinks before I noticed my wife, Sue, and her girlfriends tipping the pricey tonic into their boutique gins.

As it turned out, this was near the beginning of what became a bit of a G&T craze, with many people happily paying a premium for mixers that do not contain artificial additives. Those Fever-Tree shares in which I invested nearly 2 per cent of my life savings at £2.11 each in March 2015, as reported here at that time, doubled in price within a year, and fizzed