Hello UG!
Firstly, this is my first tab so apologies if there are any errors. I've heard the 
song closely, both original and the acoustic version and this sounds pretty close to it.

Arthue Beatrice is an awesome up and coming Indie band and Grand Union is an amazing song. 
(http://online-presence.info/)
(https://www.facebook.com/arthurbeatrice/info
So here goes: (Lyrics not entirely correct)

Tuning: Standard (EADGbe)
Watch acoustic verion for strumming pattern
Chords Required: E, B, F#, G#m 

 E          G#m    
Head, toes, let her eyes in me
 B                       F#
They cloud the sea, could never be let out
 E           G#m
These lines repeat themselves
 B           F#
Slit your half and talk all else

 E            G#m
Slow down, the acting temp
 B               F#
The housing man, full order to pass
 E              G#m
Sly thoughts, prophetic dreams
 B               F#                 E  B  F#
Pathetic scenes, hand hold me down

               E           B       F#
But itâ??s so devastating when you feel
              E  B  F#   
Youâ??re all above
                E  B  F# 
And youâ??re not in love

      E  B  F#        E                 B      F#
Dead lungs, youâ??re becoming someone elseâ??s tongue
             E  B  F#        E  B  F#
Coughing up blood, skin coming off


Quick mask, the spot on cheek
And fidgets leave, itâ??s all going down
Lifting the bills away, your border state

Like steel, itâ??s so devastating when you feel
Youâ??re all above
And youâ??re not in love

Dead lungs, youâ??re becoming someone elseâ??s tongue
Coughing up blood, skin coming off

   E       F#               E    
Weâ??re cold but the door is closed
          F#                 E
Shadows that are holding you out
       F#            E         F#
Sleep out, recessively, let it be

Like steel, itâ??s so devastating when you feel
Youâ??re all above
And youâ??re not in love

Dead lungs, youâ??re becoming someone elseâ??s tongue
Coughing up blood, skin coming off