Anthony Williams is accused of attempting to murder passengers and staff on board a London-bound train last November

A knifeman “caused terror and fear on an unimaginable scale” to passengers when he stabbed 10 people on a London-bound train, a court has heard.

Anthony Williams, 33, is accused of attempting to murder 10 passengers and staff on an LNER train on 1 November last year and stabbing four people in the 24 hours before.