Class 121 DMUs Nos. 121020 and 121034 are to be withdrawn by Chiltern Railways when the timetable changes in May.
The first generation DMUs are the oldest still in passenger service on the main line, and are used for off-peak services between Aylesbury and Princes Risborough.
It is understood the units need new tyres, but that no Network Rail specification exists for replacements – a situation that could have knock-on effects elsewhere, such as plans by the Swanage Railway to use a first generation DMU on through services to Wareham.
No. 121034 is pictured shortly after leaving Aylesbury on March 3, with the 5P46/16.39 to Princes Risborough. Jamie Squibbs
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