This is what Chris Martin plays on this Youtube video:
http://www.youtube.com/watch?v=jkMGf2_NKvs

Tune up the high E-string to F, then play:
   Dm   Bb   F    Fsus4 C/G
F--0----0----0----0----x---|
B-10----6----1----1----8---|
G-10----7----2----0----9---|
D-12----8----3----3----10--|
A-12----8----3----3----10--|
E--x----x----x----x----x---|

Notes:
This is an edited version of Ver4, I fixed the mistakes. Check out my Youtube 
covers http://www.youtube.com/user/joshyboy152.

The song is in 4/4 time. All chords are played for a bar. Except whenever an Fsus chord
played and F chords is played for 2 beats then play Fsus for 2 beats.

Listen to the song in the Video to find out the strumming-pattern, it's pretty easy.

The chords are like bar chords except you use your thumb for the 6 string in this case
doesn't use his thumb or fret the high e string.


Intro

F F Fsus4

Verse 1

Dm          Bb                      F
Come up to meet you, tell you I'm sorry
F                    Fsus4
You don't know how lovely you are.
Dm          Bb                  F
I had to find you, tell you I need you,
F                   Fsus4
Tell you I set you apart.

Dm             Bb                       F
Tell me your secrets and nurse me your questions,
F            Fsus4
Oh lets go back to the start.
Dm             Bb               F
Running in circles, Comin' in tails
F             Fsus4
Heads on a science apart.

Chorus

Bb     Bb                F
Nobody said it was easy,
F                              Fsus4
Oh it's such a shame for us to part.
Bb     Bb                F
Nobody said it was easy,
            Fsus4                       C/G
No one ever said it would be so hard.
C/G                  F
Oh take me back to the start.

Interlude
Bb F F Fsus4


Verse 2

Dm            Bb                     F
I was just guessin' at numbers and figures,
F             Fsus4
Pulling the puzzles apart.
Dm              Bb                   F
Questions of science, science and progress
F                 Fsus4
Don't speak as loud as my heart.

Dm                Bb                     F
And tell me you love me, come back and haunt me
          Fsus4
Oh and I rush to the start.
Dm           Bb               F
Runnin' in circles, Chasin' tails
F              Fsus4
Comin' back as we are

Chorus

Bb     Bb                F
Nobody said it was easy,
F                              Fsus4
Oh it's such a shame for us to part.
Bb     Bb                F
Nobody said it was easy,
            Fsus4                       C/G
No one ever said it would be so hard.
C/G                  F
Oh take me back to the start.

Interlude

Bb F F Fsus4  Dm Bb F Fsus4

Outro

Dm   Bb       F   F
  Ohhhh oooooo
Dm   Bb       F   F
  Ahhhh oooooo
Dm   Bb       F   Fsus4
  Ohhhh oooooo
Dm   Bb       F
  Ohhhh oooooo