Jonathan Macho

 wrote several novels and short stories for Candy Jar Books.

The Lucy Wilson Mysteries

 * The Serpent's Tongue
 * The Ballad of the Borad

Lethbridge-Stewart

 * The Two Brigadiers (in The HAVOC Files 4)

UNIT

 * The Aftermath of Aberbuwch (in Operation Wildcat and Other Stories)

The Lucy Wilson Mysteries

 * Copy/Paste (in Lockdown)