Rail passengers suffered another day of travel chaos after more signalling problems on some of the country's busiest routes.

The Rail, Maritime and Transport union called on the Government to act after services were disrupted..

A signalling problem at South Croydon caused delays of up to an hour between Purley and East Croydon, which were expected to continue until this afternoon.

The problem hit Southern services between Tonbridge/Horsham/Reigate and London Victoria and between Bognor Regis/ Brighton/Eastbourne and London Bridge as well as Thameslink trains between Brighton and Bedford/London Bridge.

The RMT said the problems were the latest in a series of signal failures, faulty trains and other issues which have caused travel misery for weeks.

General secretary Mick Cash said: "Surveys of passengers show that the Govia Thameslink franchise has the lowest satisfaction results and the continuing chaos this morning piles on more misery while the franchise holders, who promised the Earth when they won the contract, are laughing all the way to the bank.

"Even more galling for passengers paying through the nose for this lousy service is the fact that those profits are being used to subsidise rail travel in France.

"Meanwhile the expanded franchise are looking to hammer down on jobs and staff working conditions as they look to milk the system for every penny they can get. That is right at the root of all of the current problems."