A train company has been branded a “disgrace” after it emerged some of its new fleet will be without toilets.

Passengers on Southern Railway services between Brighton and Portsmouth face travelling for up to 90 minutes without the facilities.

The National Union of Rail, Maritime and Transport Workers (RMT) criticised Southern Railway’s decision to introduce these trains, dubbing the operator “greedy” and “money-grabbing”.

The class 313 trains will be rolled out on the line from December but cannot be fitted with toilets because they are too old.

They were bought from London Overground to help overcrowding on the network and are being rolled out on lines across the county.

Southern said they are being “refreshed” with new information systems and space for wheelchairs and bicycles.

A Southern spokeswoman said: “In December, we will be introducing more trains onto the network to increase capacity for passengers. Some of them will not have on-board toilets.

“These will run in areas where short journeys are typical, such as along our south coast route where the majority of passengers do journeys of less than 30 minutes.

“These trains are available now which means we can provide additional passenger capacity on our busy trains as quickly as possible.”

A spokesman for the Department for Transport said there were no rules on whether or not toilets should be available on trains.