Aside from Thomas, Edward, the "Coffee Pots", and the Wellsworth and Suddery Railway Tank Engines, it had no other engines of its own. Therefore, engines were leased from the Midland Railway on the mainland until more could be purchased, and they were relied upon heavily during WWI. This arrangement had ended by 1923, when the events of The Three Railway Engines took place. No precise details of the engines were given, thus little is known about them.