Complex sentence: It originated as a spoof novel for publisher Sidgwick & Jackson, however, Pearson knew Peter Janson-Smith, the Glidrose chairman, who gave permission for the work to be published.
Split into simpler sentences: It originated as a spoof novel for publisher Sidgwick & Jackson. However, Pearson knew Peter Janson-Smith, the Glidrose chairman, who gave permission for the work to be published.