Our Christmas competitions have now closed. But you can still read each set of biographies and see if you can spot what links the people shown in the sets of red, green, and blue books.
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1–11 December: this competition has now closed.

Find out what the link was

12–21 December: this competition has now closed.

Find out what the link was

22–31 December: this competition has now closed.

Find out what the link was