4 cylinder
Close to completion in 2011, although Exmoor was suitably discrete then as to whether it was expected to be used on their own railway or there was a client waiting. In any event, the machine was never finished, and it is not entirely clear whether it has been dismantled, sold or is still in the workshop. It's not clear from the photo whether it was designed to only usea back bunker-mounted water tank, side tanks or both.