The chemical formula shown on screen Hg(HN3)CL2 shows the digits as superscripts; they should be subscripts.
When the body of the K47 crew member Wardin (played by Tony O'Leary) is having its autopsy and he is shown as dead, you can see him breathing under the cloth in the close-ups.
The final shot of the Liberator turning is from Season 1's "Spacefall". The prison ship 'London' can clearly be seen docked to the central nacelle.