- Revisions log
We are working towards being compliant with the Code of Practice for National Statistics. The code requires us to publish a revisions policy which explains the nature and extent of revisions.
The aim of the revisions policy is to be open and transparent to the public about revisions that we make.
Since revisions are a normal and inevitable part of statistical publications, our revision policy will allow you to acknowledge and plan for the revisions accordingly.
National Rail Trends – Public Performance Measure (PPM) Revisions Paper
Last updated: May 2013