A bus operator has increased its prices on some of its routes through Derby. Trent Barton announced its single fares will rise by 10p, while "2trip" return tickets will go up by 20p. The hike came into force on Sunday. Among the routes affected are: i4 – Derby, Chaddesden, Spondon, Borrowash to Nottingham Rainbow One – Alfreton and Ripley to NottinghamIndigo – Derby, Long Eaton and Nottingham 20 and 21- Heanor to Nottingham Rapid One – Ripley and Heanor to Nottingham 1A – Ripley to Heanor A spokesman for the bus operator said: "We understand that increases to fares are never good news, and the decision was not taken lightly. "These latest changes will enable us to invest in our buses, their features and latest technologies, making sure we remain a really good bus company." MORE NEWS: Car overturns after crash on busy Derbyshire roadMeanwhile, several timetables changes have been made to some routes. Evening journeys on the Amberline route between Derby and Hucknall have been scrappe..