Former professional Vin Denson is recovering from a stroke at his Essex home.
Denson, now 78, the first Briton to win a stage of the Tour of Italy in 1960s, spent several days recovering in hospital recently.
He had been feeling unwell for some months and had turned down an invitation to attend the 100th anniversary Tour de France celebrations on the Champs Elysees with other compatriots of his era.
Denson famously rode for two of the biggest names of the 60s, Belgian Rik Van Looy followed by France’s five times Tour winner, Jacques Anquetil in a succession of Grand Tours.
He was also a friend and teammate of Tom Simpson who died in 1967 Tour de France.