Brand new two car 172104 is one of the sets for Chiltern Railways and carries that livery as it works a test train through Haddenham & Thame Parkway station. This was 5Z72, 08:30 from Derby Litchurch Lane to Marylebone, returning as 5Z74 at 13:03 from Marylebone to Derby. It was running at getting on for full line speed (100mph) at 11:16 on Monday 16th May 2011. Digital Image No. GMPI9069.