How did Bedford train crash happen? The unanswered questions about UK's worst train disaster in 20 years that has left one dead and 100 injured

A total of 100 people were injured, 32 seriously, after a Luton Airport Express service ploughed into the back of a Nottingham to St Pancras train at around 5.15pm on Friday.

How did Bedford train crash happen? The unanswered questions about UK's worst train disaster in 20 years that has left one dead and 100 injured
A total of 100 people were injured, 32 seriously, after a Luton Airport Express service ploughed into the back of a Nottingham to St Pancras train at around 5.15pm on Friday.