John Halliwell wrote in news:qLoqKBApGKi$ snipped-for-privacy@photopia.demon.co.uk:
Found the illustration in my copy of "Project Cancelled" The central one semi-recessed in the bombay, and the other two on the Skybolt pickup points.
Apparently, the Gnats were each to carry kT nukes! Needlesss to say, pilot survivability would have been low. Pretty much back to the old manned rockets/bombs of WWII Germany/Japan.