The Department for Transport will continue to monitor passenger numbers against capacity and does not plan to replace this measure.
The Office for Rail Regulation publishes statistics on passengers in excess of capacity in National Rail Trends:
http://www.rail-reg.gov.uk/upload/pdf/rolling-c1-railusage.pdf
In 2008 a measure was published for train operating companies covering London and the south-east. The same measure will be updated in the National Rail Trends Yearbook when it becomes available on 30 July 2009.
Franchises let since 2004 include a performance regime which requires, where appropriate, a franchisee to report actual provision of seating capacity against that scheduled. This regime is based on targets, which usually require the franchisee to progressively improve actual provision compared with planned provision, over the life of the franchise.
The specific arrangements for each operator can viewed on the Department for Transport's website at the following address:
http://www.dft.gov.uk/pgr/rail/passenger/publicregister/current/