Minor sources of delay add up and can make all the difference to punctuality, LNER MD DAVID HORNE and NIGEL G. HARRIS of The Railway Consultancy told the Institution of Railway Operators
Performance on the East Coast main line has been far from perfect in recent years. From a high point of a Public Performance Measure (PPM) nudging 90% in late 2015, inter-city performance declined. The dual impact of the ‘Beast from the East’ in March 2018, followed by the difficult May 2018 timetable change, drove PPM to a nadir of the low 70s in the latter part of 2018. Things have improved somewhat since then, but there is still some way to go.