Southern Rail has been rated one of the worst train companies in a Which? reader survey.
It came 19th out of 21 companies for overall customer satisfaction - with a rating of 46 per cent.
The survey asked readers to rate the companies according to; availability of seating, cleanliness of toilets, condition of the train, punctuality, reliability and value for money.
A Southern Rail spokesman said: “We care about what passengers think of us and we know that because of performance problems, our service has been below the levels expected.
“Although the Which? survey findings on overall satisfaction are inconsistent with the Passengers Focus National Rail Passenger Survey which said that 77 per cent of our passengers are satisfied overall, irrespective of the survey, we know that the key to improving satisfaction is improving performance.”
“The reasons for deterioration in our performance, particularly over the survey period are clearly understood - it relates to the impact of major development work on our route as well as other areas we can improve upon - and we have been working with Network Rail and Govia Thameslink Railway (GTR) to produce an industry improvement plan, which we’ve published and is available for download at www.southernrailway.com/improvementplan.
“Through this plan we have already started tackling some key issues affecting our network, including making some changes to the timetable to ease the pressure on the infrastructure at London Bridge.
“We will continue to work very hard on getting back to the normal levels of performance our passengers expect.”