@ Toby @ Bytron.
Long overdue thanks.
@ Strummer of 69
Great username - welcome to the forum

Fantastic input Richard! Would you have any advice on changing the key of a song in B minor?
I'm presuming the capo method outlined wouldn't work due to B minor Barre chord.
It can and does. Everything moves and sometimes barre chords end up being available as open chord shapes.
... Stop Crying your heart ... I've tried changing the Key to A minor but it doesn't sound quite right ...
How did you achieve that? What chords did you end up with? In what way did it not sound 'right'?
... the capo method you've given ... Doesn't appear possible with this song though....
I like a challenge!

Do you want to stay in the original key of B minor?
If so, then I hope this helps.
Most online sources list the chords as:
Bm, D, E, Em (or Em7), Esus4, G, Asus2, Asus4
I have listed alphabetically.
The chords in the key of B minor are:
Bm, C#dim, D, Em, F#m, G, A
The sus chords are neither major nor minor so Esus4 can be taken as a replacement for diatonic Em and Asus2 plus Asus4 can be taken as replacements for diatonic A.
So all the given chords are diatonic. Apart from E major. E major belongs in the parallel major key of B major. It is a 'borrowed chord'. Bringing it in to the song which is firmly in the key of B minor makes it a major IV.
Okay. Let's get the capo going. If you are playing Capo 2 all chords can be played as open shapes apart from G, which is played as a full E-shape barre chord. If you move the capo, then what?
Well, the B minor chord is considered an A-shape minor chord.
Following the CAGED order beginning with A we have AGEDC. Which means the next potential shape for the B-minor chord is a G-shape. We do not have an open chord shape for minor chords using the G-shape so we move on.
Next up to consider is an E-shape. Yes. We have an E-shape that we can use to play minor chords. To play B minor with this shape we must capo at fret 7. Let's see what that yields for the other chords.
Bm - E-shape minor open chord
D - G-shape open chord
E - A-shape open chord
Em - A-shape minor open chord
Em7 - A-shape minor 7 open chord
Esus4 - A-shape sus 4 open chord
G - C-shape open chord
Asus2 - D-shape sus 2 open chord
Asus4 - D-shape sus 4 open chord.
Oh yes!
You can play the entire song with no barres in the original key of B minor.
Now, if you want to change key, simply keep those same chord shapes and move the capo to suit.