Rail fares Q&A: Why are they going up again?

By Richard Westcott
Transport correspondent, BBC News

  • Published
Lady buys a ticket at Clapham JunctionImage source, Getty Images
Image caption,
Rail fares rise by an average amount, meaning that some may have bigger increases than others

Rail tickets are about to go up again - by an average of 4.1% from January 2014.

That's 1% above inflation - and will apply to all regulated fares, including season tickets.

The actual pounds and pence price hikes won't be revealed for a while yet, but why the seemingly inexorable rise?