I worked out the bass for the intro and break but not for the whole song so if any one 
any additions to this tab please feel free to do so or use this tab to extend your own version.

Intro/Break Bass
G:-------------------------------------------------|
D:--------------------------------4----------------|
A:----------2----4--2------4-2-4-------------------|
E:---0-2-4------------2------------------2-2-4-4-7-|

verse chords
E  C#m  F#m  B
7---4---2---7-|
9---5---2---7-|
9---6---2---8-|  Just repeat this pattern as necessary until chorus.
9---6---4---9-|  The strumming pattern is easy to figure out.
7---4---4---9-|
x---x---2---7-|

Chorus Chords
F#m  B   A
2----7---5-|
2----7---5-|
2----8---6-|
4----9---7-|
4----9---7-|
2----7---5-|

I have listed the lyrics below just in case there is any confusion on how the chorus is played:

                  F#m F#m (down strokes)
oh the boys a slag
                  B   B   (down strokes)
the best you ever had
                  F#m F#m (down strokes)
the best you ever had
     F#m F#m   B B   B B        <-(up to here is all down strokes
is just a memory of those dreams  but start strumming after this)
     F#m       B
as daft as they may seem
     F#m      (pause)
as daft as they may seem my love
     A     (slowly strum down)
when you dream them up

Then back to the verse the lead also comes in at this point with a little melodic riff 
I have had a stab at this but i'm not sure if its 100% correct but here it is anyway:

e:----7-9-----------------------2-4-|
B:---9---------7---4--2--------4----|
G:-9---------8---6-----------4------|
D:----------------------------------|
A:----------------------------------|
E:----------------------------------|

This riff also comes in a bit later on in the song:
e:----7-9----7-----4~~~-------------|
B:---9------------------------------|
G:-9--------------------------------| repeat as necessary
D:----------------------------------|
A:----------------------------------|
E:----------------------------------|