Photos taking during work on the Colas-operated Midland Main Line Overhead Line test train, utilising Europhoenix-owned electric locomotive 91117. I was involved with modifications to the locomotive to allow it to run in this configuration, and with some of the test runs. Though I refer to the train as Colas-operated, for simplicity, the train was being operated on behalf of the overhead line equipment installers SPL Powerlines; the train was formed of two HST power cars from Colas, electric locomotive 91117 from Europhoenix and four Mk.3 carriages from Eastern Rail Services/Romic; other companies involved were Serco and T-RIS for the pantograph and monitoring equipment; dg8 and DEU for design approvals and installation; and UK Rail Leasing for work done at Loughborough and maintenance of the train at Leicester. The test train formation is: 43301 - 42097 - 44012 - 91117 - 42376 - 45003 - 43303.