Chiltern Rail's new class 68 express loco

Diesel locos of the UK rail network, including both modern and vintage traction still in mainline use today.
One of the new Chiltern class 68 locos comes to a stop just outside Princes Risborough while on a test run before being put into mainline traffic.
EOS-1d MkIV,35mm, ISO320, f8.0, 1/640

class 59 stone train