Began life as a Kickstarter project (which was giving the blessing of ITV, Sylvia Anderson, and the Gerry Anderson estate) which was successfully funded on July 9th, 2015.
The episodes are adaptations of the vinyl mini-albums which were made exclusively for that format at the time. In fact, the audio for these episodes are sourced from those albums as well.
These new episodes were filmed at Stirling Road, Slough which is the same location the original Thunderbirds (1965) episodes were shot 50 years prior.