An East Midlands train that crashed into the back of another train in Bedford sped up after passing a red danger signal, according to findings from rail investigators.

The driver of the East Midlands train died in the collision, which occurred in June.

According to the investigation, the driver received an automatic in-cab warning after the train passed the red signal on the line.

Investigators found that the driver acknowledged this automatic warning at the time it was issued.

However, despite acknowledging the alert, the driver did not appear to take any action to slow or bring the train to a halt.

Instead, the East Midlands train continued to accelerate along the track, subsequently running into the rear of the train in front.

Investigators also noted a significant detail about the signal involved: the danger signal passed by the train was one that was rarely ever red.

What we don't know yet is why the automatic warning was acknowledged without the driver applying the brakes, or why the train accelerated afterwards.

Those unanswered questions remain central as investigators work to understand the full circumstances surrounding the June crash.

Establishing the exact sequence of events following an acknowledged danger signal is a critical focus in reports of this kind.

I'll be following this one closely as further official findings are released — check back for updates.