RAIL workers have condemned bosses’ “disgraceful” admission that trains will continue to dump human waste on the tracks — despite a promise to end the practice this year.

Network Rail has said that a 2017 pledge by former chief executive Mark Carne to stop using trains which flush sewage directly onto tracks by the end of 2019 will be broken.

East Midlands Railway will be given the green light to continue this practice until 2023, alongside other operators such as Northern and West Midlands.

RMT general secretary Mick Cash condemned this “filthy and disgusting practice,” which “sees track workers routinely sprayed with human excrement and fleet staff left to scrape it off the bottom of trains.”

He added: “The blame for this broken promise, which means the continuation of this disgraceful practice that shames Britain’s railways, lies at the door of the greedy train companies.”