All three spoke about the past times of Wilbert Awdry, how the characters came to life and more.
Christopher previously spoke to ITV for the Centenary and the BBC for the 65th Anniversary of the Railway Series.
The interviews can be found on YouTube via the links at the bottom as uploaded by BusterTheSteamroller.
Thomas and His Friends (No. 42) is now on sale in UK shops today from July 4th 2011.