Jack and the Sodor Construction Company

Jack and the Sodor Construction Company or Jack and the Pack was a mini-series devised by Phil Fehrle to be a spin-off ofThomas the Tank Engine and Friends. The plan was soon scrapped when HiT Entertainment took over because it conflicted with their other construction-based series, "Bob the Builder". Twenty-six episodes were planned, but only thirteen were filmed.

The characters only appeared in two sixth season episodes, Jack Jumps In and A Friend in Need. In 2007 a DVD, Thomas' Trusty Friends/On Site with Thomas and Other Adventures, was released. Since then, the Pack has made appearances in The Great Discovery and the twelfth season episode, Percy and the Bandstand. Jack returned in CGI in the 2013 special, King of the Railway, and appeared again in Sodor's Legend of the Lost Treasure, in which Alfie, Oliver, Max and Monty also returned.

For this series, large-scale models of Thomas and Percy were built. Two of these models are now on display at the Japanese Thomas Town.

Headwriter Andrew Brenner stated on his CV that he has worked on this series since 2010. It is unknown if this is an indication that the series will return.