Giorgio Piola's favourite moments from 50 years of Monaco Grands Prix

Our famed technical illustrator Giorgio Piola is celebrating 50 years of attending Formula 1 races - a career that has taken him to more than 800 races and started with the Monaco GP in 1969. In this exclusive insight into his time in F1, Piola explains how he earned his first job that year, and his favourite things he has witnessed on the streets of Monte Carlo during his five decades of attending the race