hey, didnt take me too long to figure this out so you all should find this easy.
 although it takes a while to get used to singing and playing at the same time, 
especially the chorus. :D 

Verse 1

E
Up on the Fifth Floor

Harvey Nics
B       C#
Down to Claridges
B
And Trader Vics
A                 B
Mai Tai baby or a Singapore Sling
E                        B                A      
Get your cards behind the bar and get the cocktails in
E
Follow me to the Match Bar

For Whiskey Sour
B           C#
Down to the Sanderson
B
For happy hour
A                 B
Margaritas or the Pink Champagne
E                 B                A
We've all gone to Blakes cos it's cocktail night again

F#                               B
A social evening with a touch of class sweet woman

Chorus:
F#  E  A  E
Cock [cock]
F#            E  A  E
Cock cock cock cocktails
F#  E  A  E
Cock [cock]
F#            E  A  E
Cock cock cock cocktails

Verse 2:
E
Honey I've got the van
So let's go to Cannes
B           C#
We could do Manhattens
B
At the Juan Lapin
A                      B
Carlton Casino and the Nova Hilton Bar
E                 B            A
Drive out to the Cap where the cocktails are

F#                                    B
All your favourite drinks in the same glass, sweet woman

Repeat chorus:
Cock [cock]
Cock cock cock cocktails
Cock [cock]
Cock cock cock cocktails

Solo: Chorus chords/riff thing (figuring the solo out at the moment.)

F#                                    B
All your favourite drinks in the same glass, sweet woman
F#                                    B
And if you want to go off-piste, well all you've to do is ask

Final Chorus:
Cock [cock]
Cock cock cock cocktails
Cock [cock]
Cock cock cock cocktails
Cock [cock]
Cock cock cock cocktails
Cock [cock]
Cock cock cock cocktails

thats about it, cheers.