A taxi driver, who did not want to be named, was queuing outside the station when the two people were hit by a train.
I was just waiting for a job when I heard the sirens and saw about four or five police cars arrive but we didn't know it was this serious until the station was closed and everyone was forced to leave. It's terrible what has happened, we can't believe it.
We've heard a lot of different things but we don't know what has really happened.
Police have confirmed that a woman and a child were killed after being struck by a train at a busy station. British Transport Police say the deaths are being treated as suspicious and investigators are appealing for witnesses to the tragedy in Slough, Berkshire to come forward.
One of the passengers on the train told ITV News:
We went through Slough, there was a loud bang and the train came to a stop. Police officers have classed the train as a crime scene and are currently taking photos of evidence.
We were called at 9.42am to reports of two people struck by a train. We sent two ambulance officers and an ambulance crew and two people were confirmed deceased at the scene.
Our officers were called to Slough railway station shortly before 9.45am on Tuesday, 23 September, following reports that two people had been struck by a train. Thames Valley Police and South Central Ambulance Service also attended the incident, and two people were pronounced dead at the scene. The incident is currently being treated as suspicious. Officers are working to identify the deceased, and a full investigation has been launched. The station is currently closed while inquiries continue. For the latest information on disruption to rail services contact National Rail Enquiries on 08457 48 49 50.
Due to the incident at Slough Station, the station is now closed and has no public access until further notice.
Two people have been killed after being hit by a train at Slough in Berkshire. Police are currently treating their deaths as suspicious.