I was intrigued by his article as I couldn't find the official figures to which he referred. Fortunately, Juliet Hyatt of the Office Of Rail Regulation has come to my rescue. She writes:
"Your enquiry was passed to our statistics team who have
advised that the 23.1% increase in real terms quoted is taken from the
"Index showing average change in price of rail fares 2004-2013", the
latest version of which was published last Thursday (1st August 2013). The 23.1% refers to the
real terms change in average past 2013 compared to 2004, for
"Anytime" tickets for all operators.
From this table, the actual % fare increases in real terms by the Groups to which the three Birmingham-London train operating companies fall is as follows:
+Chiltern Railways (London & SE)
Advance .... -3.8
Anytime .... 15.9
Off Peak ... 18.4
Season .... 12.9
Super Off-Peak ... 9.7
Other ... -0.6
All Tickets ....15
Revenue per journey ... -2.5
+Virgin Trains (Long Distance)
Advance .... 21.4
Anytime .... 31.5
Off Peak ... 14
Season .... 17.9
Super Off-Peak ... 14.6
Other ... 22.3
All Tickets ....22
Revenue per journey ... -7.7
+London Midland
Advance .... 17.6
Anytime .... 17
Off Peak ... 13.9
Season .... 10.4
Super Off-Peak ... 21
Other ... 11.3
All Tickets ....14.7
Revenue per journey ... 8.1