Major new research suggests one in three commuters were delayed on their most recent train journey.
The survey conducted by Which? involved nearly 7,000 rail passengers, and found that 32% of commuters delayed while 7% of respondents said their last journey was delayed by at least half an hour.
A delay of 30 minutes or more would entitle passengers to compensation, yet the polling also found that 64% of those delayed that long weren't informed about their rights at the time and only 34% of those who could be entitled actually made a compensation claim.
Of leisure passengers, 15% experienced delays – 4% of these were delayed by 30 minutes or more.
The survey also identified the top 10 asks of rail passengers, with 46% calling for more carriages at peak times, 37% clean working toilets, 34% free wi-fi and 24% more punctual trains.
The research also identified the operators with most delays and those with worst overall satisfaction levels.
Which? found that 31% of passengers were delayed on their most recent journey on Arriva Trains Wales, 30% on First Great Western/Great Western Railway, 29% on Transport for London Rail, 28% on Thameslink and Great Northern and 27% on Southern.
This is compared with only 7% on Merseyrail at the bottom of the list.
Overall, Grand Central had the highest customer satisfaction score, followed by Hull Trains and then Merseyrail.
Southeastern and Thameslink and Great Northern had the joint lowest.