Season 12 aired between 01 Sep 2008 and 26 Sep 2008, 20 episodes.
Episodes
E01
Thomas and the Billboard
01 Sep 2008
E02
Steady Eddie
02 Sep 2008
E03
Rosie's Funfair Special
03 Sep 2008
E04
Mountain Marvel
04 Sep 2008
E05
Henry Gets It Wrong
05 Sep 2008
E06
Heave Ho, Thomas
08 Sep 2008
E07
Toby's Special Surprise
09 Sep 2008
E08
Excellent Emily
10 Sep 2008
E09
The Party Surprise
11 Sep 2008
E10
Saved You!
12 Sep 2008
E11
Duncan and the Hot Air Balloon
15 Sep 2008
E12
James Works It Out
16 Sep 2008
E13
Tram Trouble
17 Sep 2008
E14
Don't Go Back
18 Sep 2008
E15
Gordon Takes a Shortcut
19 Sep 2008
E16
The Man in the Hills
22 Sep 2008
E17
Thomas Puts the Brakes On
23 Sep 2008
E18
Percy and the Bandstand
24 Sep 2008
E19
Push Me, Pull You
25 Sep 2008
E20
Best Friends
26 Sep 2008