Better known to Doctor Who fans as Manuel Alvarado, the co-author of Doctor Who: The Unfolding Text (1983) (with John Tulloch).
The Unfolding Text was the first academic monograph on Doctor Who; preceeding it had been The Making of Doctor Who, annuals, the Lofficier programme guide, Alan Road's Doctor Who: The Making of a Television Series and some Nation/Dicks cash ins.
