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Last updated: 17:25

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Train service punctuality and reliability

For information on how the train service is performing – check below for yesterday’s service or download our latest four-week report.

On time punctuality 

From April 2019, we are publishing a new measure of train punctuality as part of national plans to improve train service performance, reduce delays and increase transparency with ‘to the minute’ punctuality data. It is known as 'On time' and records punctuality at each station along a journey.

The current data known as the public performance measure (PPM) considers a train to be on time if it arrives within 5 minutes of its scheduled arrival time (or 10 minutes for long distance operators).

The daily report

Every day we publish our performance statistics for the previous day. We report two figures: 

  • PPM – the percentage of trains arriving at their destination within 5 minutes of schedule
  • On time – the percentage of trains arriving at the scheduled time at each station stop on a journey

Thursday 25th April 2019

Route PPM On Time
Thameslink 89.7% 73.8%
Southern Mainline 84.4% 68.3%
Southern Coastway 97.4% 84.3%
Southern Metro 93.9% 76.1%
Gatwick Express 87.8% 59.1%
Great Northern 93.9% 81.7%
Total 91.2% 75.7%

4-week performance results

In addition to daily reports, we also prepare statistics measuring performance over a 4-week period. 

These reports let you see how we’re doing over a longer time frame. They also show any major incidents that affected our service. 

Download the most recent report:

Performance report

We also publish an update on how our plans for improvement are having an impact on passengers’ services.

Update for Period 13