Rail passengers unhappy with London Midland services in south west Hertfordshire have launched an online survey to find out what other commuters think of the service.

The group of passengers said they decided to take action over what they consider to be an unacceptable service from the rail operator, which increased its fare prices this month.

The move comes after disgruntled passengers started discussing the problems on the service, which runs through stations such as Watford Junction and Kings Langley to London Euston, over Twitter.

Kings Langley resident, Joanne Ashford, 29, who uses the line to commute to her job in public relations in south London, said passengers wanted a service that reflected the high ticket prices they were paying.

She said: "It is the irregular service and delays. On some occasions there are shorter trains and overcrowding.

"The Kings Langley trains leave from the Tring depot and if there cancellations they tend to be the first to go so you can be left on the platform for an hour.

"I pay around £3,500 a year to use this service and I don’t know whose problem it is but I just want it fixed as I pay a lot of money for it.

"I want a service that reflects the money I pay to use it."

The group is working with MPs, such as Watford backbencher Richard Harrington, who have also expressed displeasure with the service London Midland is providing.

This month London Midland passengers were hit with another round of fare increases of an average of 2.8 per cent.

The group plan to take the findings of the survey to the Department of Transport to put pressure on London Midland to improve the service.

Miss Ashford, of Station Road, added: "We decided it was time to take action.

"We are asking London Midland passengers from across the country to complete our survey, so that we can get a true picture of both the positive and negative experiences of the service, and the impact that it has on their lives, both in terms of work and leisure.

"Working with MPs, we want to push London Midland to make a concerted effort to improve the service we pay so much for.

"The more people who respond to our survey, the louder our voice will be."

Passengers can complete the survey online at www.surveymonkey.com/s/QR2MJ53.