wrote in message ...
"A train is deemed full ***by me*** [i.e. R Perry] when all the seats
are occupied. After that people can stand in the aisles and
vestibules, making it more than 100% full."

The above does not match the railway industry's definition.

Which is?

From
http://www.dft.gov.uk/statistics/rel...weekdays-2011/

Crowding is measured by comparing the standard class critical load with the
capacity of the service. The standard class capacity includes the number of
standard class seats on the service and may include an allowance for
standing room. No allowance for standing is made on a service when the time
between stations before (AM) or after (PM) the critical load point is more
than 20 minutes, but it is allowed when it is 20 minutes or less. The
allowance for standing varies with the type of rolling stock but, for modern
sliding door stock, it is typically approximately 35 per cent of the number
of standard class seats. For most train operators the standing allowance is
based on an allowance of 0.45m2 of floor space per passenger. However, for
South West Trains a figure of 0.25m2 is used and for Southeastern's class
376 'metro' style stock and for London Overground a figure of 0.35m2 is
used. In some cases train operators do not have standing capacities
calculated for their rolling stock based on the available floor area. In
these cases the standing capacities have been estimated as 20 per cent of
the number of standard class seats for long distance rolling stock, and 35
per cent of the number of standard class seats for commuter rolling stock.
These estimates have been used for Arriva Trains Wales, CrossCountry, East
Midland Trains, East Coast, First Great Western and Virgin Trains.

Peter Smyth