Greater Anglia is the latest rail company to introduce new compensation rules for passengers facing train delays.
The government's 'Delay Repay 15' means passengers can claim back 25 percent of single fare journeys delayed between 15 and 29 minutes.
Greater Anglia has now agreed to adopt the scheme - it used to pay out compensation for delays over 30 minutes.
The usual compensation will still apply for delays longer than 30 minutes and longer than one hour.
Greater Anglia is investing £1.4 billion to replace its train fleet with more than 1,000 new carriages due to come into service before the end of 2020.