I really enjoyed Thursday night’s showing of it on Dave - probably the most I’ve enjoyed RD for a long while now 😃
The blu ray is scheduled for June 1st!!! (That is quick!) - and is advertised as having around 55 mins of ‘bonus footage’ on it - so it is likely there is some very useful material in there:-
https://www.amazon.co.uk/Red-Dwarf-Promised-Land-Blu-ray/dp/B0851M9L81
Already listed in the ‘Extras’ are deleted scenes, smeg-ups, audience reaction, and a documentary on it.
Wishing you all the best with this mate 😃