Thameslink and Great Northern railway were recently rated the worst for customer satisfaction in a recent survey.
Consumer group Which surveyed a number of rail passengers accross the country to measure customer satisfaction for all rail users.
Thameslink customers were only 46% satisfied with the service they receive.
The findings from Which just confirm our own view that Thameslink urgently need to make improvements to the passenger service and ensure that passengers can travel safely and without delays.
A statement from Govia Thameslink Railway, which runs Thameslink & Great Northern, as well as Southern and Gatwick Express routes, said: "We know that passenger satisfaction is strongly linked to punctuality and together with our partners Network Rail, we are working hard to improve performance by reducing the delays within our control."
You can view the full Which survey results on their website.