This was a decent little book by Sir Fred Hoyle and John Elliot. It also got made into a very nice little film starring (among other people) Julie Christie as the title character but as far as I know the BBC managed to misplace/destroy/fail to create the copies.
It is being remade. Unfortunately they seem to be taking liberties with the plot, since I remember the original Andromeda as an original production, not based on "one of their dead colleagues."
I have long held that one of the most damning flaws in Windows is its inability to help users to create Julie Christie.