Last modified on Wed 3 Feb 2021 00.13 EST Sir Simon Robey had his career planned out. He wanted to become a professional opera singer and his dream was to sing on stage at the Royal Opera House, but he accidentally stumbled into investment banking. It’s a decision he occasionally regrets while singing in the shower in the morning. But Robey, 60, turned out to be a pretty good banker, and has been described as the City’s “trillion dollar man” for the cumulative size of the mega-deals he has worked on, including advising the Cadbury board on the sale of the 197-year-old chocolate company to America’s Kraft in 2010. His sought-after advice has earned him at least £137m in the last seven years alone.