Performance Figures

As part of our passenger charter - Greater Anglia provides our passengers with four - weekly updates on our performance.

Greater Anglia
Stansted Express

4 weeks to 09, Dec, 2017

Performance over the last 12 months

These figures quote all trains arriving within five minutes of schedule regardless of service group, whereas the industry and Network Rail count long distance services as those arriving within ten minutes of the time quoted in the public timetable. This gives rise to a small discrepancy when comparing our figures, which are more stringent, with those of the industry bodies.

View all Train Operators performance

Right-time performance

Right-time performance measures the percentage of trains arriving at their terminating station early or within 59 seconds of schedule. The process for gathering data of this accuracy is currently not 100% reliable and the industry is working on improving the quality of this information to make right-time data more reliable.


Greater Anglia
Stansted Express

Cancellations and significant lateness (CaSL)

A train is counted as being a CaSL failure if:

  • It is cancelled at origin.
  • It is cancelled en route.
  • The originating station is changed.
  • It fails to make a scheduled stop at a station.
  • It is significantly late (ie it arrives at its terminating station 30 minutes or more late).
Greater Anglia


Amount of services cancelled at origin or en route.


Greater Anglia

Short forms

This is the amount of trains which have operated a service with a shorter formation of carriages than advertised.


Greater Anglia

4 weeks to 09, Dec, 2017

Performance over the last 12 months

Performance explained - what is PPM?

PPM, or Public Performance Measure, is the method that train companies use to measure and report the performance of train services at their final destination.

The PPM figure is calculated by counting the number of trains that arrive at their destination on time.

The following criteria can cause a train to be classified as a PPM failure:

  • Arrived at its final destination greater than four minutes later than the advertised arrival time (or greater than nine minutes for Intercity services)
  • Did not run at all
  • Did not complete its booked journey
  • Did not call at all its booked stations

The measure of the lateness of trains is taken automatically from the signalling system. Some manual recording takes place in rural locations.

The number of trains that arrive on time is then divided against the number of trains scheduled to run that day to give the daily PPM measure.

On the occasions when there is a need to implement a temporary timetable, the daily PPM will, under certain circumstances, be measured against any amended timetable.

Greater Anglia collates the PPM figure on a daily, four-weekly and annual basis. When the PPM figure is quoted as a Moving Annual Average, or MAA, this is based on an average of the previous 13 four-weekly periods of data. The MAA, therefore, gives an accurate picture of how trains have performed over an annual or 52-week period. This will be applicable from 5 February 2013.

The PPM figure is collated for Greater Anglia train services as a whole and for the following routes:

West Anglia

Services to/from Liverpool Street or Stratford to/from Kings Lynn, Ely, Cambridge, Hertford East, Cheshunt, Enfield Town or Chingford.

Stansted Express

Services to/from Liverpool Street to Stansted Airport


Services to/from Liverpool Street to Gidea Park, Shenfield, Southend Victoria and Southminster. Also includes the Romford to Upminster route.


Services to/from Liverpool Street to Chelmsford, Braintree, Colchester, Clacton, Walton on Naze, Harwich, Ipswich and Norwich. Also includes the Marks Tey to Sudbury route.


Services to/from Norwich to Cambridge, Sheringham, Cromer, Great Yarmouth and Lowestoft. Also services to/from Ipswich to Cambridge, Peterborough, Lowestoft and Felixstowe.

Our Service Groups described

East: Services to/from Liverpool Street, Chelmsford, Braintree, Colchester, Clacton, Walton-on-the-Naze, Harwich, Ipswich Norwich, Southend and Southminster.

West: Services to/from Liverpool Street, Kings Lynn, Ely, Cambridge, and Hertford East.

Rural: Services to/from Norwich to Cambridge, Sheringham, Cromer, Great Yarmouth and Lowestoft. Also services to/from Ipswich to Cambridge, Peterborough, Lowestoft and Felixstowe; and service operating Marks They to Sudbury.