One of Chiltern's new 172 two car units, 172 102, is approaching Princes Risborough station running as 5Z72, 08:30 from Derby Litchurch Lane to Marylebone, before working back as 5Z74. It is running around twenty minutes late at 11:43 on Wednesday 18th May 2011. Digital Image No. GMPI9083.
From May 2011