J.Morrison Micros was a very early development company that produced games for the Commodore 64 such as Bonka, Cybermen and Vultures … unfortunately they disappeared rather quickly too.
In issue 86 of Home Computer Weekly, another game called Jellybones was mentioned as a new title coming soon from the company. Unfortunately it never did and today the game is still at large.
We know very little apart from the mention in HCW, so do you know any more about the game?

There is a game released the same year on TI/99 with the same name according to this listing at page 154 of C+VG issue from April 1984 https://dn790000.ca.archive.org/0/items/ComputerAndVideoGamesIssue030Apr84/Computer_And_Video_Games_Issue_030_Apr_84.pdf
This seems to support my hypothesis that both GTWs from J. Morrison were conversions from other platforms of those days.
Hi Fabrizio – for this one, the game is called “Jellybeans” – so its likely a different game, but its a good shout for the Nightflight title!
My fault, I was tired, I should have reread before commenting…
No worries Fabrizio – I didn’t notice until I almost clicked save to update the page :)