MTR - which has the contract to run Crossrail - has come a-cropper in Hong Kong, as its trial of new signalling systems came off the rails.
Two subway tains collided between Central and Admiralty stations during an early morning test run on Monday before start of traffic. Both drivers were taken to hospital, with one suffering leg injuries.
It looks like the fault was in the software, which is supplied by another name familiar to Tube workers: Thales.
The incident is being seen as damaging to MTR Corp’s reputation, following a series of scandals and a top management reshuffle in the last year. But will this latest cock-up make TfL rethink its policy of contracting-out crticial functions to private companies? Or will our intrepid bosses carry on regardless?