In 1965 he became Britain's first professional world road race champion and won the Giro di Lombardia; this made him the BBC Sports Personality of the Year, the first cyclist to win the award.
[19] Simpson competed regularly at Fallowfield Stadium in Manchester, where in early 1956 he met amateur world pursuit silver medallist Cyril Cartwright, who helped him develop his technique.
[20][21] At the national championships at Fallowfield the 18-year-old Simpson won a silver medal in the individual pursuit, defeating amateur world champion Norman Sheil before losing to Mike Gambrill.
There was a buzz in the crowd as he began to climb, you could feel it, and I remember this lad with a shock of hair thundering up the hill past me, carried on a solid wave of excitement.
In a points race at an international event at Fallowfield a week later Simpson crashed badly, almost breaking his leg; he stopped working for a month and struggled to regain his form.
In July, Simpson won a silver medal for England in the individual pursuit at the British Empire and Commonwealth Games in Cardiff, losing to Sheil by one-hundredth of a second in the final.
He failed by 320 metres, covering a distance of 43.995 km (27.337 mi) and blaming his failure on the low temperature generated by an ice rink in the centre of the velodrome.
He stayed at the Café Den Engel, run by Albert Beurick, who organised for him to ride at Ghent's Kuipke velodrome in the Sportpaleis (English: Sport Palace).
[40] Simpson decided to move to the continent for a better chance at success,[41] and contacted French brothers Robert and Yvon Murphy, whom he met while racing.
[58] He passed a medical in Sheffield, but history repeated itself and the papers arrived the day after his departure for his team's training camp in Narbonne in southern France.
[13][60] In August Simpson competed at the world championships in the 5000 m individual pursuit at Amsterdam's large, open-air velodrome and the road race on the nearby Circuit Park Zandvoort motor-racing track.
[74] He launched an attack as an early breakaway, riding alone at the front for 40 km (24.9 mi), but was caught around a mile from the finish at Roubaix Velodrome, coming in ninth.
[121] As the peloton reached the Col du Tourmalet, Simpson attacked with a small group of select riders, finishing eighteenth place in a bunch sprint.
[123][116] On stage nineteen he advanced recklessly descending the Col de Porte in the Alps, crashing on a bend and only saved from falling over the edge by a tree, leaving him with a broken left middle finger.
[137] At the road world championships in Ronse, Belgium, the Belgians controlled the race until Simpson broke free, catching two riders ahead: Henry Anglade (France) and Shay Elliott (Ireland).
He skipped his usual winter training schedule for his first skiing holiday at Saint-Gervais-les-Bains in the Alps, taking Helen and his two young daughters, Jane and Joanne.
On final climb, the Poggio, Poulidor launched a series of attacks on the group; only Simpson managed to stay with him and they crossed the summit and descended into San Remo.
[167][170][171] Peugeot manager Gaston Plaud ordered Simpson to ride the Midi Libre stage race to earn a place in the Tour de France, and he finished third overall.
With 30 km (18.6 mi) remaining, he began to lose control of his bike and was halted by Peugeot manager Gaston Plaud until he had recovered, by which time the race had passed.
[216] In an interview with L'Équipe's Philippe Brunel in February 2000,[217] Tour de France physician Pierre Dumas revealed that Simpson told him that he was taken to hospital during the Vuelta.
[219] Simpson was determined to make an impact in the Tour de France; in his eighth year as a professional cyclist, he hoped for larger appearance fees in post-Tour criteriums to help secure his financial future after retirement.
[231] The thirteenth stage (13 July) of the 1967 Tour de France measured 211.5 km (131.4 mi); it started in Marseille, crossing Mont Ventoux (the "Giant of Provence") before finishing in Carpentras.
[242][243] Approximately forty minutes after his collapse, a police helicopter took Simpson to nearby Avignon hospital,[244][245] where he was pronounced dead at 5:40 p.m.[202][243] Two empty tubes and a half-full one of amphetamines, one of which was labelled "Tonedron", were found in the rear pocket of his jersey.
[254] The epitaph on Simpson's gravestone in Harworth cemetery reads, "His body ached, his legs grew tired, but still he would not give in", taken from a card left by his brother, Harry, following his death.
[202] He described a near-death experience during a race in 1964, the Trofeo Baracchi two-man time trial, to Vin Denson, who recalled: "He said he felt peace of mind and wasn't afraid to die.
Simpson understood the value of fruit and vegetables after reading Les Cures de jus by nutritionist Raymond Dextreit; during the winter, he would consume 10 lb (4.5 kg) of carrots a day.
[265] In the 1968 Tour de France, there was a special prize given in his honour, the Souvenir Tom Simpson, a sprint on stage 15 in the small town of Mirepoix, won by the soloing Roger Pingeon.
"[267] A granite memorial to Simpson, with the words "Olympic medallist, world champion, British sporting ambassador", stands on the spot where he collapsed and died on Ventoux, one kilometre east of the summit.
[272] The Harworth and Bircotes Sports and Social Club has a small museum dedicated to Simpson, opened by Belgian cyclist Lucien Van Impe in August 2001.
"[290] In January 1966, Simpson was a guest castaway on BBC Radio 4's Desert Island Discs; his favourite musical piece was "Ari's Theme" from Exodus by the London Festival Orchestra, his book choice was The Pickwick Papers and his luxury item was golf equipment.