The most successful authors in the UK: who is selling most?

Sarah Coles
JK Rowling
JK Rowling

Dominic Lipinski/PA Archive/Press Association Images

There are no prizes for guessing which author has sold most books in the UK since records began. JK Rowling's Harry Potter titles are the runaway winners, selling an incredible £237.6 million - around twice her nearest rival.

But who are her closest challengers, who is the surprise in second place, and does this translate into endless riches?
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