Update - Person struck by train near Biggleswade
All train lines have now re-opened after a person was struck by a train near Biggleswade earlier today.
Friday, 29th December 2017, 12:14 pm
Friday, 29th December 2017, 12:19 pm
But people are still advised there could be a lot of congestion to and from London Kings Cross.
Residual delays are likely until 2pm.