Third-party ticket retailers who quietly add fees to the fares they display to passengers are being warned by the Office of Rail and Road that they must be transparent when quoting prices, and not leave out charges which will be added to the total. The rail regulator has examined the trading practices of 19 third-party retailers who are licensed to sell rail tickets. They are entitled to keep 5 per cent commission, but 12 of the retailers examined also charge a fee to passengers in addition to the fare, which ranges from 45p for each ticket to ?6.45 for each transaction.