Conversation so far:
Where was Tom Simpson born?
Tom Simpson was born in Haswell, County Durham, England.
Who were Tom Simpson's parents?
Tom Simpson's parents were Tom Simpson and Alice (née Cheetham).
Did Tom Simpson have any siblings?
Tom Simpson was the youngest of six children.
Where did Tom simpson go to school?
Are there any other interesting aspects about the Tom Simpson article?
Tom Simpson rode his first bike, his brother-in-law's, at age 12, sharing it with Harry and two cousins for time trials around Harworth.

Question: When did he start club racing?
Self-contained rewrite: When did Tom Simpson begin club racing?