AbbotKinneyDude - 04/08/2019
I've just received the original British tape release from Tynesoft (1987 copyright, predates the Zeppelin Games rerelease and the German release seen here). The instructions indicate Brian Jobling as the main programmer (Atari Conversion by). What I got is in poor shape but I'll send the scans to ATARIMANIA so that they can figure here.
I'm pretty sure this was written by Ian Copeland, who did this for Tynesoft, then did more Zeppelin Games later.
The tape image is missing the fourth location thus the game crashes when the fourth location is being loaded. The tape image is the same as AtariMania's Phantom tape image from the "Four Great Games - Volume 3". See my remark there.