Caledonian Sleeper passengers 'worst hit by train delays'
Nearly 4% of the operator's services suffered long delays last year, figures show.
Fifty-seven trains run significantly late every day in Britain, according to industry figures.
The Caledonian Sleeper, which runs overnight trains between London and Scotland, has the highest percentage (3.7%) of its services hit by long delays.
The second worst performer is First Hull Trains (2.7%), followed by Virgin Trains East Coast (2.6%) and Grand Central (2%).
Around 5250 trains were between 30 and 119 minutes late between July to September last year, according to Office of Rail and Road (ORR) figures.
James MacColl from the Campaign for Better Transport said train companies should do more to ensure passengers get compensation for delays.
He said: "Late-running trains can be very frustrating, but far too few passengers understand when they're due compensation or how they should go about claiming it.
"With record numbers of people now relying on the railways - and technology like electronic tickets becoming more widespread - this needs to change."
Mr MacColl said operators have a responsibility to ensure passengers know their rights and said they should ensure everyone affected by long delays gets some of their money back automatically when possible.
"With big investment going into the railways, it's also essential that the whole industry works together to minimise disruption and keep the trains running to time," he said.
A spokesman for the Rail Delivery Group, which represents train operators and Network Rail, described timetables as a "promise to passengers" and insisted "we never want people to suffer delays or disruption".
He added: "Train operators and Network Rail are working hard together every day to deliver a better, more punctual railway and to give people better information when things do go wrong.
"The rail industry has cut the number of incidents causing delays every year, but a busier network means that incidents can have a greater knock-on effect."