A court ruled on Friday that the Network Rail must pay £3 million in fines for the 2002 Potters Bar rail crash, which killed 7 people and injured more than 70 people.
The firm apologised for the accident after the hearing at St Albans Crown Court although it had acquired the business from Railtrack a few months after the crash.
“We accept the fine as we accept the liabilities inherited from Railtrack. We say again today that we are truly sorry”, said a spokesman for the company.
On May 10, 2002 a West Anglia Great Northern train to London from Norfolk had derailed at Potters Bar station in Hertfordshire.
The Director of Rail Safety at the Office of Rail Regulation Ian Prosser said: “It is welcome that Network Rail, as successor to Railtrack, pleaded guilty to health and safety breaches.
“Today marks the end of a long process which we have sought to gain a sense of justice for the families of the victims”.