#1 Jacques Anquetil 5 Wins: 1957, 1961-64 During a heated televised debate with a government minister, Anquetil declared “you can’t ride the Tour de France on mineral water. [...] Leave me in peace. Everyone takes dope.”

#2 Charly Gaul 1 Win: 1958 Gaul was famous for being able to consume more amphetamines than other riders. Marcel Ernzer warned Charly that he might die from taking too many pills. "But everybody takes them." replied Gaul. "Yes, but Charly a lot more than the others."

#3 Gastone Nencini 1 Win: 1960 In 1960, Tour de France doctor Pierre Dumas, checking up on the riders, entered a hotel bedroom and discovered Nencini on his bed with plastic tubes running from each arm to a bottle containing hormones.

#4 Felice Gimondi 1 Win: 1965 Gimondi failed doping controls twice (1968 and 1975).

#5 Lucien Aimar 1 Win: 1966 Aimar was banned for doping in 1969, causing him to miss that year's Vuelta a Espana.

#6 Eddy Merckx 5 Wins: 1969-72, 1974 Merckx tested positive for drugs on three separate occasions. These failures sometimes overshadowed his achievements, as exemplified by race authorities asking him to stay away from the 2007 UCI Road World Championships in Stuttgart.

#7 Luis Ocaña 1 Win: 1973 Ocaña failed a test on Stage 18 of the 1977 Tour de France, remembered as the 'Tour de Dope' due to the number of positive tests recorded.

#8 Bernard Thevenet 2 Wins: 1975, 1977 Thevenet admitted to using steroids for the two Tours de France which he won.

#9 Bernard Hinault 5 Wins: 1978, 1979, 1981, 1982, 1985 'The Badger' refused to take a doping control test at the 1982 Critérium de Callac and was subsequently banned.

#10 Joop Zoetemelk 1 Win: 1980 Zoetemelk failed multiple tests and admitted to blood transfusions.

#11 Laurent Fignon 2 Wins: 1983, 1984 Fignon twice failed drugs tests and admitted to having used cortisone, amphetamines and other drugs.

#12 Stephen Roche 1 Win: 1987 The investigation into Dr Francesco Conconi implicated Roche, recording that he was administered EPO during the first 7 months of 1993.

#13 Pedro Delgado 1 Win: 1988 Delgado failed a doping control for a masking agent during the 1988 Tour de France but escaped sanction as the substance, widely banned by other federations, was not actually prohibited by the UCI.

#14 Miguel Indurain 5 Wins: 1991-95 Indurain never tested +ve but worked with EPO pioneer Francesco Conconi. He staunchly defended Lance Armstrong, even after his UCI ban: "Even now I believe in his innocence. He has always respected all the regulations." (2012)

#15 Bjarne Riis 1 Win: 1996 Riis never failed a test but confessed to EPO usage.

#16 Jan Ullrich 1 Win: 1997 DNA evidence linked Ullrich to Operación Puerto. He admitted in 2013 that he had doped during his career.

#17 Marco Pantani 1 Win: 1998 'The Pirate' failed a blood test in 1999. Insulin was found in his room in 2001, leading to a UCI suspension.

#18 Lance Armstrong 7 Wins: 1999-2005 Banned for life for doping by the UCI in 2012. Armstrong admitted in 2013 to doping with various substances throughout his career.

#19 Floyd Landis 1 Win: 2006 Landis was found to have illegal limits of testosterone in his body during the 2006 Tour de France. In 2010 he admitted to doping during his career with multiple banned drugs.

#20 Alberto Contador 3 Wins: 2007, 2009, 2010 Contador was named in the Operación Puerto case. He was stripped of his 2010 Tour de France title after testing +ve for Clenbuterol.

#21 Bradley Wiggins 1 Win: 2012 A UK parliamentary report suggested Wiggins used performance-enhancing drugs under the guise of treating a legitimate medical condition in order to win the 2012 Tour de France. He was also accused of violating the UCI's 'no needles' policy.

#22 Chris Froome 4 Wins: 2013, 2015-17 Froome tested +ve for excessive levels of Salbutamol during the 2017 Vuelta a España. He was eventually cleared by the UCI, although the exact reasons why have never been fully explained.