I was trying to learn this song and although the verses worked out ok I found the chorus
the tabs available just didn't sound correct.
After watching various clips of Kate Nash and her band playing live I've come up with 
which I think is more like it.

Chorus
F (133211@1)                                 AmMy (x02210@1)finger tips are holding onto the cracks in our foundation,
	G (320003@1)		        Fand (133211@1)I know that I should let go, but I can't.

Amin (x02413@1)                                  GAnd (320003@1)every time we fight I know it's not right, every time that you're upset
      F (133211@1)			     Gand (320003@1)I smile. I know I should forget, but I can't