For and against: Anthony Smith, Passenger Focus and Michael Roberts, ATOC
Above-inflation rail fare increases of more than 6% are "completely out of kilter with the real economy", passenger groups have said.
Anthony Smith of Passenger Focus said hikes were "difficult to explain" as wages were not rising by the same rate.
Train firms say more money will allow greater investment in services.
Michael Roberts, of the Association of Train Operating Companies, said Monday's increases were partly because taxpayer funding was being reduced.
He told BBC Radio 4's Today programme: "Fare changes this year will help pay for 265,000 extra services, all against a background which is determined by government policy to reduce the call on us as taxpayers."
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