Hi Michael,
I want to give a quick idea about both University since I have successfully completed the BSc (Hons) in Astronomy (UCLan) and MSc in Astrophysics (Ljmu).
You did the right choice with UCLan the staff is very professional, extremely well organised and always ready to support students. You will have detailed feedbacks helping you to improve the level. If you proceed you will see the difference between level 4 and level 6 but the staff is ready to help you with questions or doubts.
Unfortunately I can't say the same about Ljmu, the MSc in Astrophysics has been a massive disappointment. Despite I have enjoyed the subject, there is no support of any kind, no feedback of your exams, the staff doesn't give you any help. You have quick sessions of tutorials and that's all..!
There are strange rules on the exams, if you don't respect you will be eavily penalised. Most shocking the staff doesn't give any feedback so you have no idea with question is correct and which is not so the question is: could improve the level? Definitively no...!!!
Same process was applied for my MSc dissertation, got the final marking with no feedback. In addition is not a cheap MSc currently fees are increased...
I strongly don't recommend Ljmu avoid if you can is waste time and educationally useless..
Regards