This is my interpretation of the bass from the recording for the soundtrack Love 
Actually, so please make comments in reference to that. Also, it appears the bass on the 
recording is drop D tuning (refer to bars 3 and 4 of the chorus); this tab uses standard tuning.

Intro

G|-------------------------------------------------------------|
D|---------------4-------------------4-------------------------|
A|------------5-------------------5----------------------------|  X 2
E|--7---7--7---------5--7---7--7---------5---------------------|

Verse:

G|-------------------------------------------------------------|
D|---------------4-------------------4-------------------------|
A|------------5-------------------5----------------------------|  X 4
E|--7---7--7---------5--7---7--7---------5---------------------|

Pre:

G|-------------------------------------------------------------|
D|-------------------------------------------------------------|
A|----------7-10-7--------------7-10-7-------------------------|
E|--0-------------------0--------------------------------------|

G|-------------------------------------------------------------|
D|-------------------------------------------------------------|
A|----------9-12-9--------------9-12-9-------------------------|
E|--2-------------------2--------------------------------------|

Chorus:

G|-------------------------------------------------------------|
D|-------------------------------------------------------------|
A|-------------------------------------------------------------|
E|--3-------3--3--------3-------3--3---------------------------|

[note: this is tabbed for 4 string - I realise it is drop D on the recording]
G|-------------------------------------------------------------|
D|-------------------------------------------------------------|
A|--5-------5--5--------5-------5--5---------------------------|
E|-------------------------------------------------------------|

G|-------------------------------------------------------------|
D|-------------------------------------------------------------|
A|-------------------------------------------------------------|
E|--7-------7--7--------7-------7--7---------------------------|

G|-------------------------------------------------------------|
D|-------------------------------------------------------------|
A|-------------------------------------------------------------|
E|--5-------5--5--------5-------5--5---------------------------|

Break: (1 bar)

G|-------------------------------------------------------------|
D|-------------------------------------------------------------|
A|-------------------------------------------------------------|
E|--5\---------------------------------------------------------|

Verse:

G|-------------------------------------------------------------|
D|-------------------4------------------------4----------------|
A|-------------5-6-7--------------------5-6-7------------------|  X 6
E|--7--7---7-6------------5--7--7---7-6------------------------|

REPEAT CHORUS X 2

INTERLUDE of 4 bars - same as intro, no bass

REPEAT PreChorus no bass

REPEAT CHORUS X 2

OUTRO 4 bars - same as intro, no bass