1. Both are published by Gollancz
2. Both have written about Richard Dadd's painting, The Fairy Feller's Master-Stroke - The Wee Free Men/The Witches of Chiswick
3. Both have written, or are writing about football - Unseen Academicals/Knees Up Mother Earth
4. Both have written about music - Soul Music/Sex and Drugs an Sausage Rolls
5. There is an endorsement on Robert Rankin books from Terry Pratchett, "One of the rare guys who can always make me laugh"
6. Both have used Josh Kirby for book covers, see below for Sprouts of Wrath
7. Both are writers of fantasy humour
8. Both were born in the "South" within 15 months of each other
9. If you take the letters in the name "Robert Rankin" and change a few and add three more, you can spell "Terry Pratchett"
10. Um...er...that's it.
