From 24 January 2011, Go! Cooperative planned to be operating a trial service between Alton and Medstead & Four Marks on the Mid-Hants Railway using the Class 999 unit. This was abandoned after a series of mechanical and electrical failures and due to the unit proving to be unsuitable for the long and steep gradients on the line the unit is now being reconfigured to address the problems with a redesigned chassis and conversion from LPG to Diesel power and the trial will be repeated.